De Feijenoorder, mei 1933; clubblad, Delpher, www.delpher.nl (https://resolver.kb.nl/resolve?urn=MMSARO01:003338005:00001 : accessed ). - De Feijenoorder 33-05 » Bronnen » Genealogie IJzermans & Bierhuize » Genealogie Online"> De Feijenoorder, mei 1933; clubblad, Delpher, www.delpher.nl (https://resolver.kb.nl/resolve?urn=MMSARO01:003338005:00001 : accessed ). - De Feijenoorder 33-05 » Bronnen » Genealogie IJzermans & Bierhuize » Genealogie Online">
, "," De Feijenoorder, mei 1933; clubblad, Delpher, www.delpher.nl (https://resolver.kb.nl/resolve?urn=MMSARO01:003338005:00001 : accessed ). - De Feijenoorder 33-05