Historical and Art Medals, Numismatic Books

United States of America, Photographers’ Ass[ociatio]n of America, Chautauqua, 1896, a uniface Art Nouveau bronze plaque by R. Stoll, robed figure holding shield and wreath, camera at left, 51 x 35mm; Progress in Aviation, 1910, a bronze medal by Whitehead-Hoag for the Chicago Numismatic Society, 51mm [2]. About very fine, both rare (£40-50)