Mansard Gallery was opened by art collector Ambrose Heal at Heal's London department store in 1917.
McKnight Kauffer, Paul Nash and William Roberts were among many notable artists to design posters for the gallery exhibitions.
Rhoda Dawson RA b. 1897 worked for Ashtead Potteries in Surrey, later moving to Canada.
This poster is nicely framed in a light oak frame.