found: Ebert, J. Amer. folk painters, 1975:p. 206 (Bradley, John; portrait and miniature painter, active in New York City and Staten Island; signed his work with the archaic I. for J. until 1836; act. ca. 1832-ca. 1847)
found: Lipman, J. Flowering of Amer. folk art, 1776-1876, 1974:p. 280 (Bradley, John (I. J. H. Bradley)); act. ca. 1832-1847)
found: Folk artists biog. idx., 1987:p. 30 (Bradley, I. (John); act. 1831-1847, d. 1874)
found: Groce, G. N.-Y. Hist. Soc. dict. of artists in Amer., 1564-1860, 1957:p. 75 (Bradley, John; act. 1837-1845)