The all ivory version of Thoughts was marketed in the 1930s in London by the Phillips & MacConnal Gallery of Fine Arts at 16 Conduit Street where it was sold for 13 guineas.

Cf. V. Arwas, Art Deco Sculpture: Chryselephantine Statuettes of the Twenties and Thirties, New York, 1975, p. 96 and B. Catley, Art Deco and Other Figures, Suffolk, England, 1978, p. 274 and V. Arwas, Art Deco Sculpture, London, 1992, p. 178