Brief an Freund Adolf [Dyroff]
Grafenrheinfeld, 07.04.1901 [7.IV. [19]01]Brief an Freund Adolf [Dyroff]
Giebelstadt-Allersheim, 22.12.1906 [22. Dezember [19]06]Brief an Professor [und] Freund Adolf [Dyroff]
Würzburg, 12.07.1911 [12.VII. [19]11]Briefkarte an Freund u. [...] Professor [Adolf Dyroff]
Giebelstadt-Allersheim, 12.11.1906 [12. Novemb. [19]06]