This is an Antique Civil War Era J. Hobby was born in New Rochelle, New York on July 6, 1813. He died in Hempstead Long Island, New York on August 1, 1883. New York City Directories: 1840-41 Hobby, Jonathan T. 258 Delancy; 1853-54 Hobby, Jonathan T.
From 1840 to 1854 he is a partner of Sawyer & Hobby 156 Water. 1862 the same but house Hempstead, Long Island. Hobby is listed until 1869 at 146 Water Street as a supplier of instruments under one of the above descriptions. There is no record of him in 1870 in the New York City Directories.