https://www.mappingthelives.org/bio/ea7654c1-3e78-4ea5-83a0-7c3896e95cac
https://museenkoeln.de/ns-dokumentationszentrum/default.aspx?sfrom=2923&s=2922&id=4354&ort=Riga
https://yvng.yadvashem.org/nameDetails.html?language=en&itemId=4429415&ind=1
Son: Walter Marchand https://spurenimvest.de/2022/02/20/marchand-walter/