P.K. (Paul Kenneth) Anderson (1894-1968) of Goteborg, Oklahoma, was an engineer and numismatist who published articles (circa 1930s-1960s), mostly on Spanish coins, in The Numismatist, the monthly magazine of the American Numismatic Association (ANA), and other publications. He served on the board of governors (1955-1961) and as president (1963-1965) of the ANA. His collection of Spanish coins was bequeathed to the American Numismatic Society.
City engineer John F. Jones (1864 or 5-1961) of Jamestown, New York, was a founding member of the Chautauqua County Coin, Stamp, and Curio Club in 1930 and is listed as member number six of the American Numismatic Association (ANA), which was officially organized in 1891 and reorganized in 1899.