Italian marble (?) on pier gelatin glass negative Chapman Derrick & Wrecking Co. 1964.660.2702 ViewBlock of Italian marble on floating derrick, circa 1923 gelatin silver print Merritt-Chapman & Scott Corporation circa 1923 2008.28.5.414 ViewBlock of Italian marble on floating derrick, circa 1923 gelatin silver print Merritt-Chapman & Scott Corporation circa 1923 2008.28.5.416 View