Michel Fokine's letter to Mr. Martin about Isadora Duncan's influence on him.

Isadora Duncan was often named by some  dance researchers and ballet dancers, who knew Michel Fokine, as the one who  greatly influenced  Fokine and his chareography.  The ballet perfomer  objected this statement in his letter to Mr. Martin and there  he explaned why it's happened. Here are the excerpts from this letter:

The whole letter you can read in  St. Petersburg State Theater Library

Isadora Duncan's Concert Studio(ex-Isadora Duncan's Moscow School) perfomance for the school pupils,1935

After the closing down of the Isadora Duncan's Moscow School in 1929, it was reformed into "Isadora Duncan's Conert Studio".Their  artistic director was Maria Borisova, who replaced  Irma  after her leaving to USA.(Althought, according to the Isadora Duncan Archive, Tamara Lobanovskaya was their artistic director from 1930 to 1935. But the soviet press points at Maria.)
Their manager remained Illya Shneider, who was previously the headmaster of the Moscow school.
The footage starts with the title"Learnig the Ancient Greece Art", where it shows the school excurtion in  art museum. Later on, in this museum, the dancers of  Duncan Concert Studio shows the movement of the greek statues to the pioneers.

Anna Duncan's episodic part in "Dinner at Eight"

                       
Except dancing and teaching career, Anna Duncan also acted in theater and took part in 3 movies (Dinner at Eight, The Black Cat,  The Scarlet Empress, in all of them appeared as a maid). Her movie roles was mostly short and with no replicas.

Isadora Duncan Successor Named. Berkeley Daily Gazette, July 31, 1930.

Talking about evil ways, they must be meant mostly  about "Isadorables". As it is known, Lisa perfomed at music-halls and night clubs, Maria-Theresa was a soloist dancer, Irma  together with Anna  had their own students.