HINE, LEWIS W. (1874-1940) "Testing the 'tripper valve' in big Power Plant, N.Y. City." Silver print, 6 3/4x9 5/8 inches (17.1x24.4 cm.), with Hine's title, in ink, and additional notations, in pencil, in an unknown hand, as well as two of his Hastings-On-Hudson and another credit hand stamp, on verso. 1930
