Zopher Delong House is a historic home located at Glens Falls, Warren County, New York, United States. It was built about 1870 and is a 2+1⁄2-story, three-bay brick residence with a frame service wing. It has Italianate- and Second Empire–style design elements, including a mansard roof. It features a 2-story central pavilion and bracketed entrance portico. Also on the property is the original carriage house. It is maintained as a historic house museum known as the Chapman Historical Museum by the Glens Falls-Queensbury Historical Association.