Keywords: Christiaan van Lennep.jpg en Christiaan van Lennep 1938 Christiaan van Lennep and Hendrik Timmer 1920s-30s Dutch tennis players jpg http //www flickr com/photos/uair01/ P K Custom license marker 2013 03 07 cc-by-2 0 PD-old Black and white photographs of tennis Christiaan van Lennep |