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Her work was exhibited at the National Academy of Design, the Pennsylvania Academy of the Fine Arts in Philadelphia, the Salon in Paris, the Golden Gate International Exposition (1939–1940) and the National Association of Women Painters and Sculptors.
Smyth was also director of exhibits and special events of the California Commission for the Golden Gate International Exposition (also known as the 1939 World's Fair at Treasure Island).
The Palace of Fine and Decorative Arts, also known as Building 3, on Treasure Island in San Francisco Bay, California, was an aircraft hangar constructed in 1938 for Pan American World Airways' trans-Pacific Clipper services, and then modified for the 1939-40 Golden Gate International Exposition.