Brief an Freund [Karl Lamprecht]
Leipzig, 15./4. [18]90Brief an Freund [Karl Wenck]
Lpzg [Leipzig], 1.5.[19]06Brief an Freund [Karl Wenck]
Leipzig, 17.11.[19]06Brief an Freund [Karl Wenck]
Lpzg [Leipzig], 21.2.[19]07Postkarte an Professor Dr. [Karl] Wenck in Marburg i[n] H[essen]
Lpzg [Leipzig], 3.6.[19]07Postkarte an Professor K[arl] Lamprecht in Wiesbaden
Lpz [Leipzig], Mozartstr. 19, II, 27/3 1902