New Croton Dam, circa 1907 This post features a vintage postcard depicting the nearly-completed New Croton Dam, also known as the Cornell Dam, photographed around 1907. The dating is based on the postcard's "undivided back" format, which was standard from 1901 to 1907—a period when addresses could only be written on the reverse side. The publisher was William Terhune, based in Ossining on Hudson…