1915: D. Stempel takes over the type foundry Roos & Junge, Offenbach (established in 1886).
1917: D. Stempel acquires a majority share of the type foundry Klingspor Bros., Offenbach.
1918: D. Stempel takes over the type foundry Heinrich Hoffmeister, Leipzig (established in 1898).
1919: D. Stempel acquires the type division of W. Drugulin, Leipzig (established in 1800) and a share of the type foundry Brötz & Glock, Frankfurt (established in 1892).
1927: D. Stempel acquires a shareholding in the Haas Type Foundry in Basel/Münchenstein (established in 1790) and the two foundries begin to share matrices.
1933: D. Stempel acquires a shareholding in the type foundry Benjamin Krebs (Successors), Frankfurt (established in 1816).
1956: D. Stempel AG acquires full ownership of the type foundry Klingspor Bros., Offenbach (established in 1906).
1963: Linotype takes over the type foundry Genzsch + Heyse, Hamburg (established 1833).
1970: Stempel takes over part of the type collection of C.E. Weber (Stuttgart, est. 1927).
1972: The Haas'sche type foundry in Basel/Münchenstein takes over the type foundry Deberny & Peignot, Paris.
1978: The Haas'sche type foundry takes over Fonderie Olive, Marseille (established in 1836).[4]
Nicolas Kis's original matrices for the typeface Janson have been held by Stempel since 1919. In 1936, a revival of the face was designed by Chauncey H. Griffith of the Mergenthaler Linotype for production of both Linotype matrices and foundry type by Stempel. Today, the most common digital version, Janson Text, comes from a metal version produced by Hermann Zapf in the 1950s for Stempel, also based on Kis' original matrices.[5]
Humboldt Fraktur (1938, Hiero Rhode), named after the German researcher Alexander von Humboldt. Digitized by Helzel, Delbanco (2001, as DS Humboldt Fraktur), Gerhard Helzel, and Dieter Steffmann (2002).[10]
Friedl, Ott, and Stein, Typography: an Encyclopedic Survey of Type Design and Techniques Throughout History. Black Dog & Levinthal Publishers: 1998. ISBN1-57912-023-7.
Jaspert, W. Pincus, W. Turner Berry and A.F. Johnson. The Encyclopedia of Type Faces. Blandford Press Lts.: 1953, 1983. ISBN0-7137-1347-X.