Isadore Louis Firestone (1894-1979) immigrated to the United States from his native Hungary with his family in 1907 and settled in Pittsburgh. He studied at the Department of Painting and Design at the Carnegie Institute of Technology and spent some time in New York studying at the School of Industrial Art and at the Art Students League.
While working as a clerk at Kaufman & Baer’s department store, Firestone taught at Carnegie Tech and the Irene Kaufmann Settlement Neighborhood Art School and exhibited work as a member of the Associated Artists of Pittsburgh. He was part of an exhibit of young local artists at Horne’s in 1914. He served in the U.S. military during World War I, which made him a member of the Young Men’s Hebrew Association.
Firestone appears to have left Pittsburgh sometime around 1920, eventually settling in the greater Washington D.C. area, where he continued to pursue an artistic career.