http://wikiless.i2p/wiki/Margaret_C._Anderson?lang=en
Ladies of the Rope: Gurdjieff's Special Left Bank Women's Group , by William Patrick Patterson. Arete Pubns, 1998 . ISBN 1-879514-41-9 . Baggett, Holly A. (ed.) (2000), Dear Tiny Heart: The Letters of Jane Heap and Florence Reynolds , New York University Press Feldman, Paula R. (1980).