They are best known today for their close friendship with such prominent figures of the time as D. H. Lawrence, Willa Cather and the Nehru family.
Together they wrote L'oeuvre de E.H. et Achsah Barlow Brewster (1923), which explained their artistic principles, influences and goals.
In Paris Maurice Denis and George Desvallières invited Achsah to join their Atelier d'Art Sacre, but she declined out of concern for maintaining artistic independence.
The Brewsters were remarkable in numbering among their circle of friends many prominent artistic, literary and political figures, including D.H. Lawrence and Willa Cather, both of whose writings they influenced, Elihu Vedder, Vachel Lindsay and three generations of the Nehru family.
Achsah also wrote many short stories and articles, including The Postmaster's Farewell and Ceylon the Luxuriant, which were published in Asia magazine.
Her unpublished memoir, The Child, written in India during 1941-42, recounts the family's history during the seventeen years from Harwood's birth up to the time that she left for school in England in 1929.