1. Falco candicans.: Drawn from Nature by J. Wolf, London 1868.: Bowen & Co. lith. and col. Phila da. Collection: Hill Ornithology Collection Date: 1869 Format: Image Creator: Wolf, Joseph (German painter, illustrator, and lithographer, 1820-1899, active in Britain) Engraver: Bowen & Co.
2. Falco islandicus.: Drawn from Nature by J. Wolf, London 1867.: Bowen & Co. lith. & col. Phila da. Collection: Hill Ornithology Collection Date: 1869 Format: Image Creator: Wolf, Joseph (German painter, illustrator, and lithographer, 1820-1899, active in Britain) Engraver: Bowen & Co.
