Title: Mannen van gezag
Subjects: Mayors, History, Reconstruction (1939-1951)
Places: Netherlands, Rotterdam, Rotterdam (Netherlands)
People: Pieter Jacobus Oud (1886-1968), Gerard Ewout van Walsum (1900-1980), Wim Thomassen (1909-)
Time periods: 20th century, Bombardment, 1940-1945