found: Simpson-Baikie, E. Dictionnaire international, du sport et des sciences naturelles, 1878:t.p. (Strasburg: K. Trübner)
found: OCLC, Nov. 14, 2003(usage: K. Trübner; Karl J. Trübner; Karl Trübner, active in Strasburg 1874-1904)
found: Deutsche National Bibliothek, February 7, 2014(Trübner, Karl J.; 1846-1907; publisher; born in Heidelberg; died in Strasbourg; other names: Trübner, Karl; Trübner, Karl Ignaz; Trübern, Karl I.)
found: Wikimedia Commons, February 7, 2014(File: Karl Trübner-Strasbourg.jpg; tomb of the publisher Karl Trübner (1846-1907) in the Saint-Louis de la Robertsau cemetery in Strasbourg; born January 6, 1846; died June 2, 1907)
found: Wikipedia, February 7, 2014(Trübner; Karl Ignaz Trübner (1846-1907), publisher, operator of the publisher Karl J. Trübner, brother of Wilhelm Trübner (1851-917), German Romantic painter)
found: VIAF, February 7, 2014(Trübner, Karl J., 1846-1907; Trübner, Karl Ignaz, 1846-1907; Trübner, Karl (Karl Ignaz), 1846-1907; Trübner, Karl Ignaz; Trübner, Karl I.; Trübner, Karl J.; Trübner, Karl Jgnaz; Trübner, Karl)
