August Macke (1887-1914)

[Сима]

Dear Stasia, once you ask for advice, then I would venture to give it to you. If the preparation of the report you are looking for pictures online , the best ( not to be trapped ) use of museum sites. Online stores do not allow posters references to the source of your image and thus I think , are not responsible for authenticity.
Serious honest answer to your question outright can only give a deep connoisseur of art or a Mac person , who was on the table one of the publications mentioned below . There is also a publication devoted to watercolors Mac.

Macke's oeuvre catalogue has been published by Gustav Vriesen (2nd edition, Stuttgart, 1967).



Good luck in your search.