Friedrich-Bauer-Grotesk (before 1936, Friedrich Bauer), in addition to a basic face, there were three other versions, halbfette, fette, and an in-line version, lichte. Also cast by
Genzsch & Heyse, A.G.
Potsdam Schnitt (before 1936), four versions, magerer, halbfetter, fetter, and schmal-halbfetter.
Jaspert, W. Pincus, W. Turner Berry and A.F. Johnson, The Encyclopedia of Type Faces, Blandford Press Lts.: 1953, 1983,
ISBN0-7137-1347-X, p. 2408-2409.