Arnold Neustadter

Arnold Neustadter (25 August 1910 – 17 April 1996)[1] was an American inventor and businessman. , He invented the Rolodex desktop rotating card file and other office equipment with Danish engineer Hildaur Neilson[2] which has been called "a triumph of low technology"[3] and "a lasting symbol of the art of networking".[4]

Arnold Neustadter
Born25 August 1910
Died17 April 1996
Engineering career

Neustadter's earlier inventions included the Autodex, a spring-operated phone directory that automatically opened to the selected letter, Swivodex, an inkwell that did not spill, Punchodex, a paper hole puncher, and Clipodex, a transcription aid that attached to a stenographer's knee.[5]


  1. ^ Zuckerman, Laurence (1996-04-19). "Arnold Neustadter Dies at 85; Orderly Mind Behind Rolodex (Published 1996)". The New York Times. ISSN 0362-4331. Retrieved 2021-01-14.
  2. ^ "The History of the Rolodex". Durakis Executive Search. 2015-02-11. Retrieved 2021-01-14.
  3. ^ Rolodex Card Files: A Triumph of Low Technology, Boston Globe
  4. ^ Arnold Neustadter Dies at 85; Orderly Mind Behind Rolodex, New York Times
  5. ^ History of the Rolodex Archived 2008-11-07 at the Library of Congress Web Archives,