1. [Anonymous] (1848) `Geophysik', Meyers Großes Conversationslexikon, 52 Vols (Dresden), Vol. 12, pp. 530ff.
2. Bartels, J. (1944) Studienführer für Geophysik (Heidelberg: Carl Winter Universitätsverlag). Volume 7 in the series `Naturforschung und Medizin in Deutschland, 1939–1946'.
3. Editorial Greeting;Bauer;Terrestrial Magnetism,1896
4. A Plea for Terrestrial and Cosmical Physics;Bauer;Monthly Weather Review,1909
5. Bauer, L. A. (1916) `Our Part in the Advancement of World Physical Sciences', typescript, 5 pp., in Papers of George Ellery Hale, California Institute of Technology, microfilm reel 4.