Here I present: Fred Gissoni, Using the Cranmer ABACUS for the Blind, American Printing House for the Blind, Louisville KENTUCKY, 1962.
INTRODUCTION.
Fred Gissoni, Using the Cranmer ABACUS for the Blind, 1964 is abacus arithmetic book for the blind. Four (4) arithmetic functions: add, subtract, multiply & divide are presented for blind students.
The Cranmer ABACUS was designed by Terence V. (Tim) Cranmer (1925-2001) of the Kentucky Division of Rehabilitation Services for the Blind in early 1962, and soon placed on the market by the American Printing House for the Blind in 1964.
Terence V. (Tim) Cranmer was blind from childhood. He made and sold plastic jewelry in his early years, worked briefly at Kentucky Industries for the Blind, and then spent 10 years as a piano technician. In 1952, he began working for the Kentucky Division of Rehabilitation Services for the Blind, rising through the ranks. He was an active member of the National Federation of the Blind, and made several inventions.
In 1979 Terence Cranmer, received an honorary doctorate from the University of Louisville-Kentucky for the invention of the Cranmer ABACUS, and other contributions the blind & low-vision.
