Allied Radio 1937, Federated Purchaser 1936, the Harry Alter Radio Book from 1929, plus runs of Heathkit, Lafayette and Radio Shack — scanned whole and offered as downloads rather than a viewer, because the point is that you get to keep them. The warning that the files are large and will take a while is the most 2003 sentence on the web, and this is a much better use of a domain than most.