Delaware County, NY Genealogy and History Site

Men at Homestead at Dunraven - My Great Grandfather Henri Valente Carrere, I, is 2nd from right (in light suit). He was brother of John Merven Carrere, architect of the firm Carrere and Hastings, NYC.(designed NY PublicLibrary, Murry Guggenheim mansion, now museum, Frick Mansion, many others. Possibly Ziba Sanford on the far left?