Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. J. Foster Warner (1859-1937), also known as John Foster Warner, was a Rochester, New York-based architect. He was the son of one of Rochester's most prominent 19th century architects, Andrew Jackson Warner (1833-1910). After receiving his architectural training in his father's office, the younger Warner opened his own office in 1889 and remained in continuous practice until his death in 1937. 1893: Granite Building, Rochester, New York, listed on the National Register of Historic Places in 1984. 1894-1896: Monroe County Courthouse, Rochester, New York, listed on the National Register of Historic Places in 1974 as a contributing structure.