National Museum of American History
P.O. Box 37012, MRC 601
Constitution Ave., between 12th and 14th Sts., N.W.,
Washington, D.C. 20013-7012
2 cu. ft. : 2 boxes.
The first digital telephone answering device was invented by Kazuo Hashimoto in mid-1983. Collection consists of material documenting early telephone answering devices.