https://digital.sciencehistory.org/works/nnmd806/viewer/et2vgse
Postcard from Otto Rohm and his family to John Haas, August 25, 1936 - Science History Institute...
Postcard from Otto Rohm (1876-1939) and his children Otto and Marianne to John C. Haas (1918-2011). Along with the postcard is a note explaining that Kloster...
science history instituteotto rohmjohn haaspostcardfamily