| Cloisonne Enamel Panel | | 1919 | | | |
| Close of a November Day | | 1930 | | | |
| Clouding Over | | 1933 | | | Honorable Mention |
| Clouds Above the Mesa | | 1924 | | | |
| Cloudy Spring Day | | 1939 | | | |
| Clown Acrobat (Henry Savilla) | | 1934 | | | First Prize |
| Clown's Head, No. 1 | | 1931 | | | First Prize |
| Clowns Making Up | | 1934 | | | Special Award |
| Coasters | | 1935 | | | |
| Coin des Pecheurs | | 1929 | | | |
| Collinwood Shops | | 1922 | | | |
| Collioure, France | | 1932 | | | |
| Cologne | | 1931 | | | Honorable Mention |
| Color | | 1939 | | | |
| Colorado Adobes | | 1936 | | | |
| Colorado Landscape | | 1934 | | | |
| Colorado Mountains | | 1935 | | | |
| Columbia cut stone quarry | | 1938 | | | |
| Columbia Quarry Cut Shed | | 1938 | | | |
| Coming Alongside | | 1927 | | | |
| Coming into Port (bromoil) | | 1930 | | | |
| Coming Storm | | 1935 | | | |
| Coming to Anchor | | 1919 | | | First Prize, Decorative Painting |
| Commercial Street, Provincetown | | 1933 | | | |
| Commune Luncheon | | 1934 | | | |
| Composition | | 1931 | | | First Prize |
| Composition | | 1928 | | | Honorable Mention |
| Composition | | 1937 | | | Honorable Mention |
| Composition | | 1938 | | | |
| Composition - Globe | | 1929 | | | Honorable Mention |
| Composition, No. 2 | | 1933 | | | Second Prize |
| Concrete Span | | 1934 | | | |
| Confidences | | 1933 | | | Third Prize |
| Congo God or Primitive Religion | | 1935 | | | |
| Conrad - Model for Bronze | | 1937 | | | |
| Conscripts, 1918 | | 1934 | | | Third Prize |
| Conserve Jar, spoon and cover, set with tourmaline--pewter | | 1936 | | | |
| Conserve Jar, spoon and cover--pewter | | 1936 | | | |
| Construction | | 1929 | | | |
| Construction, Cleveland | | 1923 | | | |
| Contemplation | | 1934 | | | |
| Contemplation | | 1934 | | | |
| Contented | | 1933 | | | |
| Contented Cows | | 1932 | | | |
| Convalescence | | 1939 | | | |
| Convent Pergola, Amalfi, Italy | | 1923 | | | |
| Conventional Fish | | 1929 | | | |
| Conversation | | 1935 | | | |
| Conversation | | 1932 | | | |
| Coombe in Teignhead | | 1936 | | | |
