Kappeln, Germany, 1911

1911 – A historic postcard shows the harbour of Kappeln, Germany. Scan © Mark Zanzig/zanzig.com

Portrait of a Lady, Gera, Germany, c. 1890

UNDATED – Portrait of a young lady. © by Mark Zanzig/zanzig.com/Photo: August Lutz

UNDATED – Portrait of a young lady. © by Mark Zanzig/zanzig.com/Photo: Ottmar Heydecker

1927 – The bay of the Dieksee at Malente-Gremsmühlen in Germany. © Mark Zanzig/zanzig.com/Photo: Julius Simonsen

1912 – The beach of Grömitz in Germany, packed with beach chairs. © Mark Zanzig/zanzig.com/Photo: Julius Simonsen

1979 – Portrait of Inga Schweim (1942-2004) at a photo studio in Kiel, Germany. © Mark Zanzig/zanzig.com/Photo: Renard, Kiel

MARCH 1957 – Tourists enjoy the view from Monte Tibidabo near Barcelona in Spain. © Mark Zanzig/zanzig.com

UNDATED – A cabinet photo shows a young couple in a studio in Hamburg, Germany. Photo: Otto Haase, Hamburg