found: NUCMC data from New Jersey Historical Soc. for Canfield-Dickerson families' papers, 1738-1926(David Thomas)
found: WWWA 1607-1896(Thomas, David; b. 1794; d. 1882; iron manufacturer; railroad executive)
found: Thomas Iron Company, Thomas Iron Company, 1854-1904 :p. 8, 25-29 (David Thomas, born November 3, 1794 at Tyllwyd, parish of Cadoxton, Wales; died June 20, 1882; superintendent of the Yniscedwyn Iron Works in Wales, 1817-1839; pioneer in the smelting of iron with anthracite coal; emigrated in 1839, having been recruited to establish the works of the Lehigh Crane Iron Company at Catasauqua, Pa.; one of the founders of the Thomas Iron Company, 1854)
found: Dictionary of American biography, vol. 18 :p. 428 (David Thomas lived at Catasauqua, Pa., until his death; also president of the Catasauqua and Fogelsville Railroad Company, director of the Lehigh Valley Railroad Company and first president of the American Institute of Mining Engineers)
