J.C.B. Mohr (Paul Siebeck) (1899-2005)(20)
F. Neukomm & R. Fornara Dia Herstellung (Firma)(1)
Mertens, Hans-Joachim (1934-2022)(1)
Minerva-GmbH (Frankfurt, Main) (1950-)(1)
Musgrave, Richard Abel (1910-2007)(1)
Müller, Ernst Wilhelm (1925-2013)(1)
Müller-Wirth, Robert (1898-1980)(1)