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PATRONS AND FRIENDS
OF THE MUSEUM

Financial, Physical, Heritage and Virtual Donors

KEEP ISRM FREE!
Donations are
tax deductable

The ISRM curator wishes to acknowledge the many supporters of the ISRM, who with their gracious generosity have provided slide rules (Physical Donors), scans, photos, manuals (Virtual Donors) and other artifacts, as well as gifts of money or saleable items (Financial doners) to share in the expense of operating the on-line museum, for the expansion of the galleries and to provide resources for our educational outreaches. Note that ISRM is a 501(c)(3) non-profit so cash donations are tax deductable. We especially want to thank those families (Heritage Donors) who have gifted slide rules and entrusted these heirlooms to ISRM that belonged to loved ones and have shared their life stories with the slide rule community.
PATRONS (FINANCIAL DONORS)
Platinum 1st Tier Support
Star Color is based on Cumulative giving, Multiple stars are repeat donors
PHYSICAL DONORS
Gold 2nd Tier Support
HERITAGE DONORS
Silver 3rd Tier Support
VIRTUAL DONORS
Bronze 4th Tier Support
2023 Special Facebook Fundraiser for Computer equipment
Thomas Yorker New York
Alberto Dessalvi, Italy
John Savard, UK
Edgar Hurle, Florida
Pierre Bulens
George Anderson, Maryland
Maurizio Tanchi, Italy
Lyman Lew
Dennis Boone
Jeffrey montgomery
Carl Strange
Luis Perez
Thomas Carlson
William Marchant
José Sergio Ávila González
Michael Frey
Scott Cannon
Tad Gallion
Frank Cole
Peter Martin
Gregory Whitfield
The Oughtred Society

2023 Patrons
Steve Seale, Tennessee
Michael Mjelde
Mike Thompson, Los Altos, CA
ChangFan Hsiu, Taiwan
Andrew Rinehart (Recurring)
Thomas Yorker, New York (Recurring)
Tom Sackett, New York
Allyn Myers
Bob Baldwin, Eugene, OR
George Marinos
Nancy Stewart, Afton, MN

2022 Patrons
Fan Hsiu Chang, Tiawan
Steve Seale, Tennessee
Michael Mjelde
Kenneth Yanosko, California
David.L. Hilton, Westchester, CA
Raymond Faller
Thomas Yorker, New York
Michael Pechner
Matt Gilley, Texas
Harold Frost, New Hampshire
Marc Bateman, Washington
Larry Kehl,
Giuseppe Bianchi, Italy
Karen Weiner, TX & MD
Richard Burns
William Marchant
Michael Frey, New Hamshire
Jeffery Stcocker
Bruce MacNaughton
Andrew Rinehart
Andreas Faßbender, Germany
Andrew Rinehart
Michael Sonnenblick
Steve Seale, Tennessee

Special 2021 FaceBook fundraiser Patrons
Steven Konshak
Chr Wilhelm
Dylan Thinnes
Jialin Zhang
Dan Wilson
Jean-Claude Simon
Becky Konshak
2021 Patrons
Barry Eure
Kenneth Yanosko of California
Paul Kauffmann
Steven Furtado
Michael Mjelde
Richard Burns
Bob Smith-Vaughan
Edward F Brown Jr
David Wood
Gabor Holmik
David.L. Hilton, Westchester, CA
Randall Rosenfeld of Canada
Dodson Brown
Marvin Clarence of Jakarta, Indonesia
Brian McIndoe
Wayne R Pinnow, Wisconsin
Maurizio Tanchi of Terni, Italy
David.L. Hilton, Westchester, CA
Michael H Frey of New Hampshire
Dale Rupert Ron Schauble
Walter Reshetylo
Don Freesland
Marc-Yvon Comeau of Montreal, Canada.
Lyman Lew
Eamonn Gormley
Forster (Fang) Sun of China
Giuseppe Bianchi, Italy
Carliss Such
Mark Miller
Jeffrey Stocker
Glenn LeBrasseur
Michael Bauers
Thomas Yorker, New York

2020 Patrons
Michael Mjelde
Kenneth Yanosko
M. Pearson
Brian McIndoe
Michael Sonnenblick
Paul M. McConnell, Worthington, Ohio.
Raymond Faller
Andrew Pizor
Stephen Wilde
Thomas Yorker, New York
Roi Gift, Washington
Phillip Rodley, New Zealand

2019 Patrons
terry kirkpatrick
Keith Wiley
Douglas Harland
Michael Mjelde
Jose Gabriel Fernandez, Spain
+ David Deans

2018 Donors
Mary J. Levasseur
Roi Gift, Washington
Alistair Pearson
Allan J. Boardman
Michael Fink, Australia
Steve Smith
Philip Stanley, Massachussettes
Dennis Boone
Glenn Borland
Frederick Sauter
Richard Burns
Wayne R Pinnow, Wisconsin
Thomas Yorker, New York
Jose Gabriel Fernandez, Spain
Giuseppe Bianchi, Italy

2017 Donors
Mary J. Levasseur
Brenda Barnes
Kenneth Yanosko
James Owen
Aaron Sherwood
Michael Vinarcik
Jan Schoubo
Phillip Rodley, New Zealand
D.L. Hilton, Westchester, CA
Walter Davis, Nevada
Jose Gabriel Fernandez, Spain
Jeremy McCarthy, UK
Roi Gift, Washington
Thomas Yorker, New York
Richard Philabaum
Steve Smith
Dennis Boone
Ellen Finch
Richard Philabaum
Kent Berglund
James Edel
Richard Philabaum
Jordan Hatherley

2016 Donors
Riki Nakamoto, Hawaii
Kenneth Yanosko of California
Hans Milton, Sweden
Michael Fink, Australia
+ Peter Wiesbauer
D.L. Hilton, Westchester, CA
Patrick Rowlinson
David DeSpain, Texas
Richard Burns
Michael Sonnenblick
Steve Smith
Phillip Rodley, New Zealand
Giuseppe Bianchi, Italy
Michael Mjelde
Jose Gabriel Fernandez, Spain
Wayne R Pinnow, Wisconsin

2015 Donors
Kent Berglund, Illinois
Rodney Lovett, UK
Karl Kleine, Germany
Daniel Toussaint, France
Jeremy McCarthy, UK
Giuseppe Bianchi, Italy
Steve Seale, Tennessee
Richard Broman
Gwendolyn Patton
David Guthrie
Marion Moon, California
Thomas Yorker, New York
Joaquin RinconRamirez, Mexico
Jeremy McCarthy, UK
Michael Jarvis
Gregory McClure
Richard Rose, Ohio
Jeffrey White
Ronald Williams
Ian Lodge
David Green
Kevin Alm
Oughtred Society
+ from Edward F Brown Jr
Wayne R Pinnow, Wisconsin
Thomas Hazard
Marnie Shepperd, Arizona
Michael Fink, Australia
David O'Brien, Arizona
Paul Holdsworth
Fred Astren
Jose Gabriel Fernandez, Spain

2013-2014 Donors
Dr. Paul J. Tarantolo, Texas
Kent Berglund, Illinois
 + David Walker, United Kingdom
Richard Rose, Ohio
Thomas Yorker, New York
Walter Davis, Nevada
Michael Mjelde
Roi Gift, Washington
John Cadick, Texas
Philippe Deau, France ,
Nick Strauss, Washington
John Webb
Perkunas Kavolis .
Phillip Simicich, Indiana.
Laurie Emery, Iowa .
Richard Burns .
James Enterline .
Phillip Rodley, New Zealand
Steve Seale, Tennessee
John Pattinson,
Ed Millis, Texas
Pascal Garnier, France
Terence Meers, Florida
Riki Nakamoto, Hawaii
Leonard Woolsey,
Brad Clements, New York
Kevin Ward, Texas
Blaine Mogil, California
Vegard Valberg, Norway
William Priestley, Pennsylvania
Tony Pearce
 + Colin Riley
Giuseppe Bianchi, France
Kent Berglund, Illinois
Stephen, Treadwell, Texas
David Ogden, Spain

2012-2013 Donors
Joseph Higgins, Washington
Marion Moon, California
Jeremy McCarthy, United Kingdom
Philippe DEAU, France
James Alessio, Virginia
Robert James, California
Dr. Paul J. Tarantolo, Texas
Lew Solomon, New Zealand
David Huff, North Carolina
Ian Lodge, United Kingdom
Steve Seale, Tennessee
Lew Solomon, New Zealand
David Platt, California
Bennie Tschoerner, Texas
Carlos Arturo Llovera Rampone, Argentina
Keith Williamson, United Kingdom
Cyril Catt, Australia
Michael Mjelde
Hans Milton, Sweden
Jodie Hobson
William Hill, Texas
Roi Gift, Washington
 + David Walker, United Kingdom
David Guthrie, North Carolina
James Garcia, Arizona
Rodrick Macdonald, Canada
Joseph Higgins, Washington
Jose Gabriel Fernandez, Spain
Richard Rose, Ohio
John Oakhill, Australia
Louis Gotlib, Pennsylvania
Barry Myers
Richard Burns
 + Gary Lee Phillips
Albert Klumpp, Illinois
Phillip Rodley, New Zealand
David White
Robert Koppany, Arizona

2011-2012 Donors
Aurelia Meloni-Ehrig
Blane Rhoten, Maryland
Raymond Lejuez, New Jersey
John Oakhill, Australia
David O'Brien, Arizona
Justin Moretti, Canada
Larry Kehl,
Riki Nakamoto, Hawaii
Rod Vance, United Kingdom
Dr. Paul J. Tarantolo, Texas
Mark Johnson
Amin Aur, Oklahoma
Robert Stucker,
Joseph Soper, Connecticut
Marl, Armbrust, Colorado
Rod Lovett, United Kingdom
Andrew Currie, New Zealand
Robert Witt, New York
John Stevenson, Canada
David Rance, Netherlands
Thomas Yorker, New York
Rod Vance, Australia
Roi Gift, Washington
Gregory McClure, Colorado
Angel C. Conejo, Spain
Cyril Catt, Australia
Sean Sanderson. Vermont
Anthony Nevett, New Zealand
Michael Mjelde,
Ian Lodge, United Kingdom
Hans Milton, Sweden
Jose G. Fernandez, Spain
William Hill, Texas
Peter Fox, United Kingdom
Jeremy McCarthy, United Kingdom
Jack Segal,
David Ogden, Spain
Bennie Tschoerner, Texas
Alvaro Gonzalez,
Frank Robertson
John Ireton,
Richard Rose, Ohio
Miles Schumacher, Iowa
Amin Aur, Oklahoma
Michael Andersson, Sweden
James Price, Washington
Michael Haas, Virginia
Richard Davis, Nevada
Giuseppe Bianchi, Italy
Kent Berglund, Illinois
Paul Anderson
Giovanni Mai, Italy
Stephen Treadwell, Texas
Marion Moon, California
Ingo Elsen, Germany
Carl Wyant, Texas

PRE-2012 DONORS
Juergen Nestler, Germany
Anne Roha
Marc Damashek
R Daniel Johnson, Virginia
Chris Maeda, Hawaii
Skip Zogopoulos, New Hampshire
Ted Hume, Texas
Martha Prince, Arizona
David Hecht, Virginia
Oughtred Society Members
Margaret B. Nestor, Tennessee.
Peter Persoff, California.
Martina Schnitzler, Germany.
Carol H. Marand, Virginia.
Ron Raspet, Maryland.
Mike Lyons, New York
Alison and Adam Black, New Jersey.
Carolyn Murphy, Australia.
Julie Morse, Massachusettes.
Debbie Slade Pierce, Massachusettes.
Julia Benson.
Elizabeth Fukushima, Pennsylvania.
John Pazereskis, Illinois.
Paul Ross, Missouri.
Terry Kirkpatrick, Florida.
Forster (Fang) Sun, China.
Bruce Moody, South Carolina.
Rev. Jim Brandyberry, Indians.
Eric Anderson, Illinois.
David Teuton, California.
Stephen A. Harper,Minnissota.
Caroline Soles, Canada.
Leslie Dormamen, Illinos
John Holmes, Washington, D.C.
Andrienne Ervin, Tustin California.
JoAnn Lynn, Washington DC
Margaret Geller, Massachusettes
Ralph Alter, Indiana.
Cindy Tate, Montana.
Judy F. Johnson, New Hampshire.
Debra Scheidt, Missouri.
Robert W. Spalteholz.
Ted Alt.
Ron Gribnitz, South Africa.
Nancy (nee Allison) Ulrich, Colorado
Grapevinelady
Andreas Poschinger, München, DE
Christian M. Hamann, Berlin. DE
Graham L. Jones, Cambridge, UK
Debra Carpenter, Pennsylvania
Nancy H. Goody, New York
Wayne Keene
Mark Prange, Ohio
Judith Harris, Denmark
Dennis Duuberley,North Carolina
Joe Blatt, California
Philip Stanley, Massachusetts
Joseph Killian, California
Matthew Grandy, Maine
Mary Ann Schwartz, Pennsylvania
Catherine Young, California
Stephen Pruch, Oregon
Ralph Duodera, Virginia
Dr.Michael Sachs, Pennsylvania
Barry J. Altman, Minnessota
Ruth Stanier, Hereford, UK
Dr.Gerald Licari, Michigan
Jerome D, Drews, Washington
Sarah Coury, Florida
Effie Burton, Washington
Gregory and Joy Playle, Virginia
Larry Miller, Colorado
Peter D. Eikenberry Sr, Washington
Robert Hockin, Komoka, Ontario, Canada
Philip Stanley, Massachussettes
Giuseppe Bianchi, Italy
Polly Hattemer, California
Michelle Black, California
Nancy Morris, Arizona
Mike Weaver, U.K.
Robert Elliot, North Carolina
Peter Turk, Toronto, Canada
Wes Boyce, New York
Pam Eaton, Massachusettes
Bert Kolts, Colorado
Bob Schwartz, Texas
William Mulroy
David DeSpain, Texas
Kenneth Eyre, United Kingdom
Deborah Brooks, New Jersey
Colin Barnes, UK
Jim K. Neatherly, Kentucky
Monica Orban, Wisconsin
Jennie Miller, Taiwan
David Barnishim, Ohio
Bruce Blackstone, California
Edward Wright, Maryland
Ed Millis, Texas
Praxair, MN Plant
Jim Rohloff, Minnissota
Scot Jaynes, Minnissota
Laura Robertus, Minnissota
Chuck Stewart, Minnissota
Aaron Schultz, Minnissota
Lew Solomon, New Zealand
Bruce Van Deuson, North Carolina
Roberta Rosty, New Jersey
Dan Swerdlow, Maryland
Norma Tanner, Illinois
Mark Hornung, Minnissota
Albert Klumpp, Illinos
Phillip Rodley, New Zealand
Robert L. Allison, Washington
Tom Deiter, Colorado
Joel Haertling, Colorado
Alexey Davies, Colorado
James Price, Washington
Rod Vance, Australia
Dick Rose, Ohio
Juergen Nestler, Germany
Ted Hume, Texas
Richard Davis, Nevada
Martha Prince (for John), Arizona
Scott Reynolds, California
Clark McCoy - Oughtred Society
Skip Zogopoulos, New Hampshire
David Hecht, Virginia
Marten C. Jensen, California
George Keane, Missouri
David Sweetman, Nevada
Kate Matthews, California
Andrew (Andy) David Keller (deceased)
Ann Keller (for Andy), Colorado
R. Rosty, New Jersy
Jack Rababeh - Assoc.Spring
Tom Grosh
John Roe, Massachusettes
Alan D. Barbour, California
Manual Gimeniz
Jeff Illseman, Colorado
Riki Nakamoto, Hawaii
John R. Farley
Dan Boone
Richard Schember
Darwin Williams, California
Tom Miller
Brian Hanvey, Colorado
James D. Clark
Clay Castleberry, California
Bill Weinman, Oregon

A special thanks to the Martha Prince family (Arizona), and Daniel Rinehart, Becky Konshak, Yura Andreiev and Mark Armbrust (Colorado) for donating their time and energy in building, setting up and tearing down ISRM exhibits.
Thomas C. Graham,Jr. Pres. of Hotwork-USA.
Ed Millis, Dallas, Texas.
Jeremiah Whitney, Louisville, Colorado
Ruth Hazen, for Philip Hazen,Washington, D.C.
Ville Koskinen, UK for father
Fran (McGroary) Dehn of Menlo Park, CA. for Bob Dehn
Edward T. Wright Ref: Robert J. Chicca of CA
Valerie Christiansen nee Thompson. for Tommy Thompson.
David DeSpain,of Fort Worth, Texas
Ellen Emmerich, Germany, for father Ben Emmerich
Sarah Coury of Sarasota, Florida Ref: Alan E. Perry
Mikael Seierup, Denmark. for his father
Jodie Adams, and grandson, Jason Adams, of Boise, Idaho.
Catherine Young of Oak View, CA, for Cpt. James Whittier Morrill
Graham L. Jones of Cambridge, UK
Jiro Higuchi, Kamakura, Japan
Wes Boyce of Fairport, New York
N. Thomas Sheahan, designer
Nicolai Donchi, Monza, Italy for Grandfather Francis Donchi
Darbie family, Cincinnati, Ohio. For Arthur M. Darbie
Bill Geren of Dallas, Texas.
Joy Payle of Alexandria, Virginia.
William (Bill) Boas of Wray, Colorado
Marilyn D. (Stobbs) Ulrich of 0'Fallon, Missouri
Judy Gorin of St. Louis, Missouri, for Charles Meyerson
Henry Eck for Mary Elizabeth Exley, Catonsville, Maryland
Nancy H. Goody for Robert G. Goody Albany, New York
Mike Konshak for Susan E. and Leslie (Les) Konshak
Ron Pierce for Finley Pearce, Littleton, Colorado
Carl R. Wern, George H. Wern and Lars A. Wern of Sweden.
Raymond DuBois for Frank Barnett.Camas, Washington.
Neil Halsey, for father Peter J. Halsey, UK
Barbara Oppliger for Melvin Oppliger.
Midge Levy and son Benjamin Levy, Seattle, Washinbgton.
Lynn Ingram of Maudlin, South Carolina
Barry J. Altman of Plymouth, Minnesota.
Mary Ann Schwartz for Ronald J. Schwartz, Pennsylvania
Karl W. Kornchuk of Caribou, Maine.
Rick Mandrell for father Thomas C. Mandrell
Randy Shrimplin, Okeechobee, Florida.
Al White, Colorado
Dorinda Wong of Pleasanton, CA
Jeannette Lyon for Jesse (Bud) Blount Lyon, Florida
Joseph J. Graf III, grandson of James J. Graf, Sr.
Roberta Rosty for Stephen Joseph Rosty, New Jersey
Ken Jackson of Boulder, CO.
Ana E. Olson, Robert Olson's daughter-in-law
Nick Kratz, for g'father R.W. Kratz, Sr. California
Shirley Brooks for Peter Brooks. Jacksonvill, FL,
Original Owner: Peter Brooks Morton Ellen Hathaway, Indian Head park, Illinois
Judith B. King for Arnold D. Strausman, Miami Shoes, Florida.
Alice Bowling Robert N. Curry, Louisville, Kentucky.
Arthur Anderson, Boulder, Colorado
Keith Capp for Donald Capp, Sr.,San Diego, CA
G. Jeffroy Bauman, G. Jeffery, Royerford, Pensylvania
A. Joseph Killian for Col. Joseph Oschenschlager Killian
Martha H. Prince for John Prince, Tuscon, AZ
Robert Edmonds for father Dean Keith Edmonds. Colorado
Peter D. Eickenberry Sr., Washington
James H. Price, Washington
Lyle Wells of Henderson, Nevada
Emily Castellucci Ohio. used by David and Teddy
Katherine Champe Jones, Virginia for father George W. Champe
Steve Stewart.for father R.L. Stewart
Family of Leroy G. Hausler, Colorado
Christopher K. Anderson, Massachusetts
Andrew (Andy) David Keller (deceased)
Susan H. Wise for Husband Harold J. Wise. Illinois
Keith and Les Wiley for father, California
Joseph J. Graf III for Grandfather. North Carolina
Andrew Cunningham for Brian C. Cunningham, Australia.
Barbara Cunningham for Brian C. Cunningham, Australia.
Nancy Morris, Arizona for Dustin E. Morris

Marylyn Ulrich, of Missouri for George W. Ulrich
Marie Sayre Cole of NY, for father C.L. Sayre Jr.
Rob Snider. Belonged To Father Homer D. Snider
Linda Boclair, NJ for father Spafford W. Schanck
Bill Teer, Virginia
Carol Summer, UK
Randy Rash for father, Chuck Rash
Ann Morton, for father Henry S. Morton
Jay K. Wright, Washington, D.C.
Tim Patterson, for father Gregory J. Patterson
Enid Hodes, New Jersey, for father Gerard H.Holzrichter
Laryy Hodes, New Jersey
David Barnishim, Ohio
Janet L. Dubane, New Jersey, for father Merle (Mike) Walker
Jane Northcote, UK
Mark Mazzella, New York for Howard Nelson
Richard Plastino, Colorado
Maureen White, Minnissota for Uncle Phillip C. Murray
Robert Snyder, California for father Earl Snyder
Susan Jackson, Colorado for father Jim Rodgers
Barbara Emmett, Texas, for father W.P.Morris
R. Jeff Smith, Wisconson
R. Jeff Smith, WI for father Robert J. Smith
Carolyn Diviancchi, MA for father E.B. Randall
Susanne Petersson, Illinois
Michael P. Maloney, Washington
Robert L. Allison, Washington
Ron Dies, Canada
Pamela L.W. Browne, North Carolina
Laurie Deiter for father H.McFadden, Colorado
Barbara Campbell for Reed Campbell, California
Stephanie Huang, Arizona
Bram Wouters, Arizona
Peter Chmielowiec, Colorado
Russell Anthony, Colorado
Dr. Di Chen, Minnissota
Henry Benoit, Canada
Georgia Iron Works
Danforth (Danny) W. Hagler
Thomas H Sheahan, Tennessee
Mike Medlock, Indiana
Shell Thuet, California (Deceased)
Ann Kilby, Washington
Wallace E. Kane, Washington
Vern Estes, Colorado
Carlee Heit (for Ray Heit), Texas
Zdenka Novosad, PhD., Colorado
Dan Marcotte, New hampshire
John L. Crawley, III, Virginia
Robert E. Eaton, Colorado
Russell Fox, Alaska
Ruth Moyer, Virginia
Ed Millis, Texas
David Viscusi, California
Bill Boas, Colorado
Family of Glen Williams, Georgia
Marnie Shepperd, Arizona
Nancy Day for Bruce Day, Missouri
Anne Hollek for A. Jacobson
Enn Veskimets, Maryland
K.C. Schwarz, Colorado
James Robert Weber (Estate), Colorado
Shiela Russek for Roman Russek, Canada
Jason McHenry, Arizona
Children of Norman D. Fulton Jr, Ohio
Marten C. Jensen
Ric Turley for Roy Wood, Colorado
Bruce Chelf, Indiana
Amin Aur, Oklahoma
Marvin Clarence, Indonesia
Mike Syphers, Illinois
Marc-Yvon Comeau, Montreal
Ric Barline, California
Philip Stanley, Massachussettes
Douglas Harland
Paul Ross, SRTCo
Ralph T. Soule.
Tom Gahl
David Hilton, California
Patrick Coyle, UK
Giovanni Breda, Italy
Foo Cheow Ming
Steven Decker
Jorge Fabregas, Spain
Steve Searle, Tennessee
Greg Scott, Australia
JAcek Szowski, Poland
Kent Berglund PhD, Illinois
David Rance, The Netherlands
John J.G. Savard, Canada
Peter M. Hopp, United Kingdom
David Riches, United Kingdom
Nathan Zeldes, Israel
Nicola Marras, Italy
Peter Holland, Germany
Gonzalo Martin, France
Ron Kuc, Pennsylvania
Olivier Cassou, France
Roger Miller, Colorado
Paul Roller Michaelis Ph.D.,Colorado
Rick Mandrell, USA
Franco Maddaleno, Italy
Clay Castleberry, California
Orion Miller, Tennessee
Steve Treadwell
Mark Armbrust, Colorado
Tom Dilatush, California
Rod Lovett, United Kingdom
Cory Fletcher
Atsushi Tomozawa. Japan
Paul Tarantolo, Texas
Ted White, USA
Iowa State University Library
Clark McCoy, California
Ron Knapp, California
Billy Guthrie
John Sykes, United Kingdom
Walter Shawlee, Canada
Cyril Catt. Australia
Paul Ceruzzi, National Air And Space Museum
Bob Denny
John Krijnen, Netherlands
Art Kautz
Kip Ryan
Larry Kehl
Jan Pratt
Tier 1 donations are used to support the website presence and ongoing related expenses and to build public exhibits. Any excess may be used for new acquisitions. Specimens specifically donated for fund raisers fall into Tier 1.

Funds from Sale of gifted slide rule(s).
Cummulative Giving Key
+ $5+ donor
$10+ donor
$25+ donor
$50+ donor
$100+ donor
$250+ donor
$500+ donor
$1000+ donor

Tier 2 donations are used to support the slide rule loaner program, to add to the galleries and expand exhibits. At the discretion of the curator, when duplicates are received they may become part of Tier 1 to finance shipping slide rules to schools and to obtain additional specimens.

KEEP ISRM FREE!
Tier 3 donations are items entrusted by families associated with individials and become part of a permanant archive for preservation. These may be transferred to another institution at the discretion of the curator and may be used in exhibits. In rare cases, numerous duplicates of common specimens received may be used to support Tier 2, as long as there are other slide rules from that family so we can continue to honor the past owners. Tier 4 donations are electronic files used to expand the knowledge base of the on-line galleries and my be edited, altered or discarded at the discretion of the curator or webmaster.
Our apologies but we are rebuilding this list so if we have not acknowledged your contributions please let us know.


Copyright © 2003-
International Slide Rule Museum

ates of common specimens received may be used to support Tier 2, as long as there are other slide rules from that family so we can continue to honor the past owners. Tier 4 donations are electronic files used to expand the knowledge base of the on-line galleries and my be edited, altered or discarded at the discretion of the curator or webmaster. Our apologies but we are rebuilding this list so if we have not acknowledged your contributions please let us know.


Copyright © 2003-
International Slide Rule Museum

common specimens received may be used to support Tier 2, as long as there are other slide rules from that family so we can continue to honor the past owners. Tier 4 donations are electronic files used to expand the knowledge base of the on-line galleries and my be edited, altered or discarded at the discretion of the curator or webmaster. Our apologies but we are rebuilding this list so if we have not acknowledged your contributions please let us know.


Copyright © 2003-
International Slide Rule Museum

common specimens received may be used to support Tier 2, as long as there are other slide rules from that family so we can continue to honor the past owners. Tier 4 donations are electronic files used to expand the knowledge base of the on-line galleries and my be edited, altered or discarded at the discretion of the curator or webmaster. Our apologies but we are rebuilding this list so if we have not acknowledged your contributions please let us know.


Copyright © 2003-
International Slide Rule Museum