Study after Velázquez's Portrait of Pope Innocent X was created in 1953.
It is a historical costume study as well as a portrait.
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The Study was created in 1915.
The Delta Study was created in 1976.
The Study Society was created in 1951.
An Otter Study was created in 1912.
A Study in Sorcery was created in 1989.
A Study in Reds was created in 1932.
Study of a River was created in 1997.
A Study in Terror was created in 1965.
A Study of History was created in 1934.
A Study in Emerald was created in 2003.