Otto Haeckel (1872-1945) and Georg Haeckel (1873-1942) :: Racecourse on Norderney island: four ladies in white dresses on the turf, 1908. Haeckel Collection. Ullstein Bild. | src Getty Images
Two pupils of the Margaret Morris Summer Dance School (Nancy Nicholls and Noreen Richards) dancing outdoors. Undated, probably 1930s. Uncredited photographer. | src Getty Images
Charlotte Rudolph (Dresden) :: Gruppe mit Instrumenten, 1920s. From: Das Mary Wigman-Werk. Mit Beiträgen von Mary Wigman und 80 Abbildungen. Rudolf Bach. Published by Carl Reissner Verlag, Dresden, 1933. | src Abebooks
Gustav Liersch & Co. ::Barrison Sisters. Tanzfoto. Gertrude Barrison, Lona Barrison, Sophia Barrison, Inger Barrison and Olga Barrison in vaudeville costumes. | src Theatermuseum Wien