The plums of New York - Hedrick, U. P. (J. B. Lyon Co., State Printers, 1911)

The plums of New York - New York (State). Dept. of Agriculture. (J.B. Lyon Co., state printers, 1911)

Poisonous plants of all countries - Bernhard-Smith, Arthur. (Baillière, Tindall & Cox, 1923)