Ronald Sinclair as Roger Calverton in "Thoroughbreds Don't Cry".

Judy Garland, Mickey Rooney, Ronald Sinclair, C. Aubrey Smith, and Sophie Tucker in Thoroughbreds Don't Cry (1937)

Tommy Bond, Edith Fellows, Bobby Larson, Charles Peck, Dorothy Anne Seese, and Ronald Sinclair in Five Little Peppers in Trouble (1940)

Errol Flynn, Rudolph Anders, Albert Bassermann, Nancy Coleman, Ronald Sinclair, and Henry Victor in Desperate Journey (1942)

Ronald Sinclair as Jasper in "The Five Little Peppers and How They Grew".

Edith Fellows, Charles Peck, and Ronald Sinclair in Five Little Peppers in Trouble (1940)

Tommy Bond, Edith Fellows, Charles Peck, and Ronald Sinclair in Five Little Peppers in Trouble (1940)

Forrester Harvey, Charles Peck, and Ronald Sinclair in A Christmas Carol (1938)

Ronald Sinclair and Ira Stevens in A Christmas Carol (1938)

Ronald Sinclair in A Christmas Carol (1938)

Harold Hensen and Ronald Sinclair in A Christmas Carol (1938)