Female nude, ca. 1923

Lucien Waléry (aka, Yrélaw, Laryew) :: Female nude, 1923. Heliogravure. | src eBay
Lucien Waléry [aka, Stanislaw Waléry, Laryew, Yrélaw] :: Showgirl from the Folies Bergère. From a portfolio of 100 photogravures published in 1923 by the Librairie des Arts Décoratifs. | src livejournal and wikibooks

Female nude (de dos), 1910s

Jean Agelou :: Young woman [Miss Fernande] posing nude. Original 1910s French Postcard. | src eBay

Female nude (back), ca. 1935

Laure Albin-Guillot :: Study of feminine nude (female nude), France, ca. 1935. | src Getty Images

Female nude (back), 1940s

Otho Lloyd :: Nu femení, cap a 1944-1950. Gelatinobromur de plata sobre paper baritat. | src MNAC ~ Museu Nacional d’Art de Catalunya

Dance Study with Mask, 1923

Germaine Krull :: Dance Study with Mask, Berlin 1923. From the series Spuk, with dancer Berthe Krull (Germaine Krull sister). | src Arthur.io