Upton Sinclair House
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The Upton Sinclair House was, from 1942 until 1966, the principal residence of American novelist Upton Sinclair, and the place in which he wrote his later works. It is a 1923 Spanish Colonial Revival style building in a district of similar houses, located in the suburban Los Angeles community of Monrovia, in the San Gabriel Valley. The house was designed by California architect Frederick H. Wallis. It was placed on the National Register of Historic Places in 1971.