Brief an College [Hermann Usener]
Wien, 11.01.1886 [11/I [18]86]Brief an College [Hermann Usener]
Wien, 13.10.1895 [13/X [18]95]Brief an College [Hermann Usener]
Wien, 01.12.1895 [1/XII [18]95]Brief an College [Hermann Usener]
Wien, 22.03.1897 [22/III [18]97]Brief an College [Hermann Usener]
Wien, 28.04.1897 [28/IV [18]97]Brief an College [Hermann Usener]
Wien, 1891 [o.D. [1891]]