Cohen (Roger S.) Archives
Roger S. Cohen was a collector and researcher of U.S. half cents. He published American Half Cents in 1971, with a second edition in 1982. The Cohen archives consist of seven boxes donated to the Eric P. Newman Numismatic Education Society, these have been selectively scanned for presentation here on NNP.
A finding aid with some transcriptions, prepared by Dr. Robert Kebler, is listed under 2018.