Betts was one of the founders of ANS. He served as first vice president of ANS from March 25, 1869, to March 24, 1870; then as president until March 27, 1873; then as first vice president to March 26, 1874; and then as treasurer to March 19, 1889. Betts coins were included in three auction sales; Cogan June 1, 1871, Low November 11, 1898, and Low December 16, 1908. He died in Brooklyn, New York.
Author of A Descriptive List of Medals Relating to John Law and the Mississippi System in 1907.
obit: NUM 21 Oct-Nov 1908 page 355
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Descriptive list of the medals relating to John Law and the Mississippi System.
77 p. : 4to. Copy from American Numismatic Society library rare book room.