The professional estate of Prof. Walther von Dyck (*1856 - †1934) consists of a photo estate. It comprises two folders of black and white photos spanning from 1860 to 1931.
Black and white photo of Walther von Dyck in front of a board with the inscription: "Herzlichen Dank für die mir zu meinem 75. Geburtstag ausgesprochenen freundlichen Glückwünsche!" (Translation: "Thank you very much for the kind wishes expressed to me for my 75th birthday!"), 1931