bav. Chess Federation, Nuremberg Congress 1888. Participants: Dr. Tarrasch and Otto Rosenbaum.GM Robert Hübner: Analysis of the game of Rosenbaum-Hülsen, pp. 85-95; here: p. 85.Tournament in Ströbeck 1890, p.105. Otto Rosenbaum is probably depicted on the wood engraving, but unfortunately there is no photo of him for comparison.Gravestone of the married couple Otto and Auguste Rosenbaum