same book (authored by another relative, G. Kerkau) File:Elongated octagon billiard table ca. 1920.png, another shot of Paul Kerkau from the same source...
File:Ornate billiard table ca. 1920.png, a photo of Hugo Kerkow's brother or cousin, Paul Kerau, from the same book (authored by another relative, G. Kerkau)...
same book (authored by another relative, G. Kerkau) File:Ornate billiard table ca. 1920.png, another shot of Paul Kerkau from the same source English...