Keywords: Emil Bessels cph.3a40926.jpg Emil Bessels bust portrait Wood engraving in Harper's Weekly 1873 v 17 p 988 LOC-image cph 3a40926 George Tyson 1873 <gallery>File Bessels jpg</gallery> PD-old-100-1923 Emil Bessels Harper's Weekly 1873 engravings Wood engravings |