A History of the New York Gypsum Industry, 1790-1930
New York State has been identified with the American gypsum industry from its start. The deposits in the central counties, where the gypsum [calcium sulfate] outcrops in places on…
New York State has been identified with the American gypsum industry from its start. The deposits in the central counties, where the gypsum [calcium sulfate] outcrops in places on…