Madame Lubovska/Lubowska teaching student dancers from the National American Ballet school, 1924 from getty
[Madam Désirée Lubovska was not actually Russian; stage name of U.S.A. born Winniefred Foote (1893-1974) - see also]
Madame Lubouska[a.k.a. Lubowska], National American Ballet. June 30, 1925.
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[one more from Shorpy,thnx to mudwerks;]
mudwerks:Rite of Spring: 1924 | Shorpy Photo Archive
“Madame Lubouska, National American Ballet, 1924.” The Russian dancer Desiree Lubowska, whose claim to fame seems to have been the popularization of “Egyptian” poses around 1915. National Photo Co. glass negative. View full size.
[Side Note from wiki “Mme Lubowska” or “Madam Désirée Lubovska” was not actually Russian; stage name of U.S.A. born Winniefred Foote (1893-1974)]