Marcks, Erich
[MS 135 - Brief Marcks an Schulze-Gävernitz]
Heidelberg, 04/01/1907 [4 I. I907][MS 136 - Postkarte Marcks an Schulze-Gävernitz]
Hamburg, 01/02/1908 [1/2 08][MS 137 - Brief Marcks an Schulze-Gävernitz]
Hamburg, 20/11/1910 [20. 11. 10]