August Ohm (b. Berlin, 1943) is a German painter, draughtsman and stage designer. Trained in Hamburg and Berlin, since 1982 he has worked between Hamburg and Florence. His work includes landscapes, literary tributes and reinterpretations of classical themes.

The collection originates from the legacy of art historian Werner Sumowski (1931–2015), the foremost scholar of Rembrandt and his school, author of more than twenty-one volumes of reference which remain fundamental in the academic field. His library and his collection of drawings and prints constitute a direct testimony to decades of research devoted to the European graphic tradition.