SPERDVAC - The Society to Preserve and Encourage Radio Drama, Variety and Comedy
The Old Time Radio Researchers Group
The First Generation Radio Archives
Frank Passages Radio Logs
The Old-Tyme Radio Network (Jerry Haendiges)
Jerry Haendiges Radio Logs
Disc Recording Equalization Demystified
Bing Crosby Internet Museum
The Online 78rpm Discographical Project
Doug Kosmonek's Trading Pages