Matthew Currie
The Old Calculator Museum owes a debt of gratitude to Mr. Currie for donation of a Commdore AL-1000, serial number 50923 to the museum. This particular machine is a rather early machine with a low serial number, in excellent condition, and fully operational, along with an original dust-cover. This machine provides a basis for comparison with the two other AL-1000's in the museum's collection that reveals interesting production changes and revisions during the early production of the AL-1000.

Harold Koplow [Sept. 21, 1940 - Nov. 4, 2004]
Harold Koplow was Dr. Wang's "right hand technical man" during the chaotic times after Hewlett Packard introduced the HP 9100A, and blew away Wang's seemingly unshakable share of the electronic calculator marketplace. Mr. Koplow's brilliance led to the development of the microcode that made the Wang 700-series (Wang's capable and successful counter to the 9100A/B), and later, Wang's early computer systems, possible. Mr. Koplow has shared many hours of his time through EMail dialog, allowing capture of information that likely never never have been captured if not for his taking the time to share.

Kat Wassermai
Profound thanks are due to Katie Wasserman, a fellow vintage calculator enthusiast, for donation of a beautiful example of a Canon 130S calculator to the Old Calculator Museum. The Canon 130S is a follow-on to Canon's first electronic calculator, the Canon 130. Katie also donated a Victor 14-322 calculator that had some electronic problems to the museum, which will eventually be repaired (if possible), or used for parts to restore a non-operational 14-321 that the museum has on its list of "to do's".

Ignacy Fonberg
The Old Calculator Museum would like to offer its thanks to Mr. Ignacy Fonberg for donation of a Wang 701 Output Writer, and a Wang 720C Advanced Programming Calculator. The 701 Output Writer has been restored and is operational. An exhibit on the 701 Output Writer is being prepared. The 720C Calculator suffers from a defective ROM, which prevents it from operating, but it is hoped that it can be repaired in time.

Andrew M. Andrews III
The Old Calculator Museum is honored to thank Mr. Andrew M. Andrews, III, for donation of a box of Monroe 1800-series Mark Sense Program Cards to the museum. These cards, copyrighted in 1974, were used with the Monroe CP-2 card reader (which could read both punched and mark-sense cards) connected to a Monroe 1800-Series programmable calculator to load programs into the calculator's memory.

Carlos Tomaszewski
Carlos Tomaszewski was the architect of the Wyle Labs Scientific, and when Wyle Labs decided not to pursue further interest in the calculator business, was one of a group of folks that left Wyle Laboratories to form their own calculator company, Computer Design Corporation (later Compucorp). Mr. Tomaszewski was the main architect behind the development of Computer Design Corporation's revolutionary Large Scale Integration (LSI) chipsets (the HTL and ACL chipsets) that blurred the line between calculator and computer, making possible a wide range of high-powered calculators. Carlos has been an invaluable source of information relating to the history and development of Computer Design Corp., and their amazing calculators. For his contributions, the Old Calcualtor Museum is deeply indebted.

Dr. Irwin Wunderman [1931 - Jul. 23, 2005]
Dr. Wunderman founded Cintra in late 1967, as a company that developed and marketed digital measurement instrumentation, specifically related to measuring optical energy. Later, a project to develop a calculator that could interface with the instrumentation, to serve as a controller and mathatmatics processor for the instruments. Prior to founding Cintra, Dr. Wunderman was a senior engineer at Hewlett Packard, involved in the early design process of an electronic calculator. Wunderman left HP with the intention of forming his own company to make a superior electronic calculator. The calculator was the Cintra 909, followed shortly later by the Cintra 911. Cintra was later sold to Tektronix, which marketed the calculators under the Tektronix name as the Tektronix Model 909 and Model 911 calculators. Dr. Wunderman has contributed copies of many original Cintra advertisements and data sheets, as well as sharing his memories of the company. A deep debt of gratitude is owed to Dr. Wunderman for his contributions.

William Kahn
Mr. Kahn was one of the principles of Mathatronics, and the architect of the design of the Mathatron calculator. The Mathatronics Mathatron has the historical distinction as being the first known commercially-marketed all-electronic programmable desktop calculator. The Mathatron was way ahead of its time, (1964) with algebraic entry, learn-mode programming, automatic square root, and printing of all problems and results on a built-in printer. Mr. Kahn has kindly shared a great deal of information about the formation of Mathatronics, and the design of the early calculators. The information that Mr. Kahn has provided will be documented in an article soon to be available in the Old Calculator Museum.

Dr. Norman Martin
Dr. Martin is a professor of computer science and philisophy at the University of Texas at Austin. He was the designer of an amazing calculator developed for in-house engineering use at a company called Logicon, Inc. in the mid-1960's. This machine, while never sold as a commercial product, was quite a feat of engineering brilliance, with a CRT-display, core memory, wire-rope ROM, learn-mode programming, and full math capabilities. This machine gave Logicon engineers fast results to complex math problems that would have required the use of the company's large computer system, saving both time and money. Dr. Norman has shared his memories in a lengthy exchange of EMail. This invaluable capture of information will be the source for an article on the development of this calculator to be posted on the museum in the future. Sincere thanks to Dr. Martin for taking the time to share his memories.

Dennis McNurland
Mr. McNurland worked for Wang Laboratories from 1973 to 1980, mainly working on Wang's 400- and C-Series calculators. He soon became the acknowledged expert in factory repair of these machines, and came to know them inside-out. Dennis kept a great deal of old documentation from his days at Wang, and has generously provided scans and photos from those days which have proven to be wonderful additions to the museum. In addition, Dennis wrote his story about this times at Wang Laboratories, and provided it to the museum for publication. Most recently, Dennis donated parts from a Wang 452 calculator that he came to inherit while working at Wang Labs. This machine, belonging to a Wang staff member, had suffered a motherboard (powersupply) failure, and when Dennis went to look for the replacement part, itwas out of stock. Rather than wait, he just got a new motherboard for the machine (which was in stock), and quickly got his co-worker back up and running. Over time, various parts were accumulated to make an operational 452 using the old motherboard, but was a project that was never completed. Sincere thanks to Mr. McNurland for his donations and support for the Old Calculator Museum.

Dick Ahrens
Mr. Ahrens, a former Friden employee who was heavily involved in the development of the Friden 130 electronic calculator, has been an invaluable source of information about the early electronic calculator days at Friden. Dick has provided the museum with a great deal of material, ranging from a fascinating account of his time at Friden during the development of the 130, to an early prototype production circuit board (a major stretch in the state of the art of circuit board design at the time), and an original photograph of the first operational production prototype of the Friden 130. The information and materials that Dick has provided have greatly enhanced the information available on the development of this revolutionary machine.

Gene McGough
Gene provided a wonderful cache of materials from Wang Laboratories, related to the Wang 300-series and some information on Wang 700-series. Included in the materials donated by Gene are a very comprehensive set of "Wang Laboratories Programmer" periodicals, a Wang 700 Interim Instruction Manual, a number of program library documents for the Wang 300-series calculators, a Wang 370 Programming Guide, a Core Memory board for a Wang 300-series, a keyboard circuit board for a 300-series keyboard/display unit, service invoices for a Wang 360E calculator, various Wang punched cards, an IBM Port-O-Punch, and other Wang information. Gene also provided some very uncommon punched cards for the Wyle Laboratories WS-02 Scientific calculator. The Old Calculator Museum deeply appreciates Gene's generosity.

Janet Harrison
Janet and other members of her family donated a number of wonderful instruments to the museum, including a Monroe 1665, a Wang 720, and a Wang 711 I/O writer. All of these devices belonged to her father, Thomas (1914-1996), who was a mechanical engineering consultant, who used these machines in his business. Janet and other members of her family decided to donate these machines to the museum after her father passed away and the machines were gathering dust. Sincere thanks for these amazing artifacts.

Dr. Michael R. Williams
Dr. Williams, a Professor of Computer Science at The University of Calgary, in Calgary, Alberta, Canada, thoughtfully provided a number of original Olivetti Programma 101 Program Coding forms, Magnetic Cards and Mag. Card Storage Jackets for inclusion in the museum.

David Monroe
David kindly provided access to a collection of old Wang Laboratories' Programmer magazines which were a great source of information about Wang's 300 and 700-series calculators.

Joe Rigdon
Joe has been a great source of inspiration and feedback for my museum. He's provided technical information on a number of machines, as well as donating a rare cable to connect the museum's HP 9830A calculator to the HP 9866 thermal printer.

Donald Dupre
Don has been extremely generous in his contributions to the museum, including donation of the electronics package for an early Monroe EPIC-2000 calculator, as well as making a rare early Canon 161 available to the museum. Don's enthusiastic support of the museum is greatly appreciated.

Frank Trantanella
Frank was one of the early employees of Wang Laboratories who was involved in the development of Wang's early electronic calculators. Frank's main involvement was design of custom systems using Wang calculators (Specifically the LOCI-2). Frank has been extremely generous in sharing his insights and experiences with me so I can document them and make them available here in the museum. Frank has also been invaluable in putting me in touch with other folks that worked at Wang during the mid to late 1960's.

Gary Laroff
Gary was heavily involved in calculator technology since his graduate school days in the late 1960's, where he became a successful programmer for the HP 9100, and later 9800-series calculators. Gary wrote the statistical program library for HP's 9100 and 9810 calculators, as well as developing a number of other custom programs for HP. Later, Gary went to work for Tektronix, and was heavily involved with the marketing of Tek's Model 21 and Model 31 calculators. Gary has provided a wealth of valuable information on early HP, Wang, and Tektronix calculators from his archives of materials.

Prentice Robinson
Prentice has been another invaluable source of information on the early days of Wang calculators. Prentice was the primary designer of the logic of the Wang LOCI-2, and Wang 300-Series calculators. Prentice worked closely with Dr. Wang to translate Dr. Wang's ideas into electronic reality. The various documents and recollections of the early times at Wang Labs that Prentice has provided have been wonderful additions to the knowledge base of information on early Wang electronic calculators presented here.

Alex Knight
Alex is a great friend and fellow collector of electronic calculators. Alex's compendium of information on old calculators has provided a great deal of helpful information to the museum which wouldn't have been possible otherwise. Alex has also provided me a lot of encouagement, proof-reading, guidance, and overall information exchange that has been invaluable in making the museum a reality. Alex maintains a great calculator Web site called "The Electronic Calculator History & Technology E-Museum".

Paxton Hoag
Paxton has turned me on to a number of machines that would have otherwise ended up being scrapped. He's kept on the lookout for the museum, and I really appreciate the help he's given by allowing me to rescue some difficult to find old machines. Included among the machines that Paxton provided direct access to, or provided pointers to were the HP9100A, Wang 700-Series machines, HP 9810, HP9820, and HP9830, all of which are wonderful additions to the museum.

Mark Glusker
Mark, another fellow collector who specializes in electro-mechanical machines, has been a great source of information and inspiration, as well as a donor of a number of interesting machines that have made their way into the museum.

Jim Willing
Another source of a few wonderful and noteworthy machines in the museum. A fellow enthusiast for old calculating and computing equipment, Jim maintains "Jim's Computer Garage/Museum", a wonderful repository of classic computing machines.

Dan McDonald
Dan has helped me find a number of great old machines for the museum. Dan collects electro-mechanical calculators, along with classic computers and other interesting technological artifacts.

Doug Coward
Doug has provided the museum with a great deal of supporting information on the Wang 300-series calculators that has proven to be very helpful.

Chuck Carbaugh
Chuck kindly donated some Wang 300-series equipment that he had stored in his basement. This generous donation helped round out the configuration of the Wang 360SE system in the museum, as well as adding an invaluable source of accessories and spare parts which will help maintain the Wang 300-Series machines in the museum.

Serge Devidts
A fellow desktop electronic calculator enthusiast and collector living in Belguim, Serge has been a wonderful source of inspiration for my calculator preservation efforts. He has also been a great source of information and photos which have helped document some of the machines in the Old Calculator Museum. Serge has built a great calculator-related Web site called BE-CALC that you should make a point of visiting.

Mark Paulin
Mark loaned the museum his pristine Sharp Compet 363P calculator for a guest exhibit. The museum has since acquired it's own 363P, but would like to acknowledge Mr. Paulin's gracious loan of his machine for creating the exhibit on the Compet 363P.