Martin EB-57E 55-4241 4677th Defense Systems Evaluation Squadron flying over the Great Salt Lake, Utah about 1970.  To MASDC Jul 30, 1979
United States Air Force
Mikesh, Robert C. Martin B-57 Canberra: The Complete Record.Atglen, Pennsylvania: Schiffer Publishing Ltd., 1995. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-88740-661-0" title="Special:BookSources/0-88740-661-0">ISBN 0-88740-661-0</a>. USAF Photo