The almost complete 78 rpm record dating guide

Description:

A not-quite-complete (thus the title...!) guide which enables users to obtain approximate dates of both recording and issuance for virtually all 78rpm phonorecords issued in the U.S.A. between 1900 and 1942, as well as the most commonly found such phonorecords issued from 1942 until the discontinuance of the 78 speed

subjects: Collectionneurs et collections,  Collectors and collecting,  Dating,  Disques,  Histoire,  History,  Industrie,  Sound recording industry,  Sound recordings