Arthur Gumbert

Same nationality and era where possible; falls back to shared nationality or era.

• 
  Robert Ploton

  1901–1975France
• Alexander Bouman

  1892–1943Kingdom of the Netherlands
• Heinrich Kipphardt

  1897–1977
• Viktoria Hösl

  1902–1953Germany
• Frederik A. H. S. van der Laan

  1902Kingdom of the Netherlands
• Richard Metzl

  1893–1942