J. D. Trennert and Son was a German type foundry established in Altona.Genzmer, Fritz, Das Buch des Setzers, 1948.

Typefaces The following foundry types were issued by the Trennert foundry:List of foundry types taken from these sources: Jaspert, W. Pincus, W. Turner Berry and A.F. Johnson, The Encyclopedia of Type Faces, Blandford Press Lts.: 1953, 1983, , p. 2408-2409.

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