Letter from Fock, Gustav, Buchhandlung to Simonsen, David Fock, Gustav, Buchhandlung 1931-11-13 Re Simonsen's library
Letter from Fock, Gustav, Buchhandlung to Simonsen, David Fock, Gustav, Buchhandlung 1912-11-11 Re "Die jüdische Katakombe am Monteverde zu Rom" by Nikolaus Müller
Letter from Forenede Israelitiske Begravelsesselskab i Kjøbenhavn, Det to Simonsen, David Forenede Israelitiske Begravelsesselskab i Kjøbenhavn, Det 1929-09-10
Letter to Fock, Gustav, Buchhandlung from Simonsen, David Fock, Gustav, Buchhandlung 1931-11-19 Re Simonsen's library
