1. Köln a. Rh. Synagoge. Einwiehung: 22 März 1899. Date: 1899 Description: Black-and-white postcard of the exterior of the Roonstrasse Synagogue in Cologne.
2. [Synagoge Glockengasse, Köln] Date: 1870 and 1899 Description: Black-and-white photograph of the interior of the Glockengasse Synagogue in Cologne.