Brief an Adolfo [Adolf Dyroff]
Würzburg, 23.10.1932 [23.10. [19]32]Brief an Konphilister [Adolf Dyroff]
München, 17.01.1912 [17. Jan. 1912]Brief an Professor [Adolf Dyroff]
Würzburg, 09.03.1912 [9.3. [19]12]Brief an Professor [Adolf Dyroff]
Würzburg, 09.04.1912 [9.4. [19]12]Brief an Professor [Adolf Dyroff]
Lohr a. Main, 01.02.1912 [1. Febr. 1912]Brief an Professor [Adolf Dyroff]
Bayreuth, 11.02.1912 [11./II. [19]12]Brief an Univ.-Professor [Adolf Dyroff]
Würzburg, 31.01.1912 [31. Januar 1912]Postkarte an Univ. Professor Dr A. Dyroff, Bonn
München, 22.03.1912 [22.III.1912]