Resident of Bethesda, Maryland. Married to Deborah with five children. Employed as a certified public accountant.
Author of American Half-Cents - The Little Half Sisters in 1971. Two thousand copies were printed. A second edition was published in 1982. He made a presentation at the ANS COAC in 1984. The EAC honored Cohen with their annual award in 1990. obit: NUM 103 Sep 1990 page 1504; DOD: SSDI
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20 entries found for [year:1973]
Assorted correspondence with K.P. Austin.
Assorted correspondence with Jack Beymer.
Assorted correspondence with Willard Blaisdell.
Assorted correspondence with Hugh Campbell.
Assorted correspondence with Ray Chatham.
Roger Cohen's notes on other half cent collections, including those of Blaisdell, Tettenhorst, Bareford, Ray Chatham, Eric Newman, Showers, Green/Tett, K.P. Austin, Sam Ungar, Ruby Hoard, Weber, Cogan, Guth, and McGuigan.
Assorted correspondence between Del Bland and Roger Cohen.
Assorted correspondence between Ron Guth and Roger Cohen.
Roger S. Cohen's working material for Penny-Wise, including half cent coinage of 1799, 1795 half cent struck over a 1796 large cent, list of half cents seen at ANA Convention, draft of article for bottom ten half cents, top ten 1803-1804 C5 half cents, article on 1804 C3 half cent, draft of article on whist match with Jim McGuigan, letter from Jeff Oliphant with tribute to Warren Lapp commemorating 100 issues of Penny-Wise, draft and typed entry for "Sype Says" (12/22/82), letter to Jackson Storm dated 1/8/74 declining participation as a speaker at EAC Convention, letter from Frank Stillinger dated 3/11/83 requesting Cohen to speak at EAC 1983 on May 6 at Sheraton LaGuardia (RSC agrees, with draft of talk "Planchets for Half Cents 1793-1857"), series of letters between Lapp 10/1/85 and Cohen regarding a submission for Penny-Wise that was not well received and ultimately withdrawn ("1984-The Year of the Half Cent").
Folder of drafts and two articles on rarity rating updates of American Half Cents, published in Penny-Wise in 1973 and 1977.
Folder with letters on Milton Pfeffer's series of articles for Penny-Wise in the 1970s, with Roger Cohen's and Walter Breen's responses, Lapp correspondence as well as the letter Cohen asked not to be published (and was), that ignited an early controversy.
Assorted correspondence with Jim McGuigan.
Assorted correspondence with Paul Munson.
Assorted correspondence with Bob Shalowitz.
Assorted correspondence with Sam Ungar.
Assorted correspondence with Tom Wolf.
Assorted correspondence with Milton Pfeffer.
Correspondence with R. Tettenhorst on a variety of topics.