Letter from Suwalki, Jewish Community to Simonsen, David Suwalki, Jewish Community 1920-01 Probably enclosed in a letter from the Joint Distribution Committee in Warsaw
Letter to Shermayster, Meir from Simonsen, David Shermayster, Meir 1915-07-15 Re Ya'aqov Grosman (יעקב גראסמאן)
Letter from Schornstein, M. to Simonsen, David Schornstein, M. 1915-07-01 Brev fra Gustav Blau til M. Schornstein videresendt til David Simonsen
Letter from Studenterhjemmets Presseudvalg to Simonsen, David Studenterhjemmets Presseudvalg 1917-12-17
Letter to Studenterhjemmets Presseudvalg from Simonsen, David Studenterhjemmets Presseudvalg 1917-05-03/1917-05-04 Bilag: 9 siders artikel med titlen "Den russiske Revolutions Inflydelse paa Jødernes Stilling"
Letter from Skandinavisk Jødisk Central-Komité to Simonsen, David Skandinavisk Jødisk Central-Komité 1916-06-22
Letter to Statspolitiet from Simonsen, David Statspolitiet 1918-12-13 Re Ber (Boris) Senderowitsch Goldberg
