| 1897 |
Born December 3 in New York City to Harry and Jenny Gropper |
| 1912 |
Studies under artists George Bellows and Robert Henri |
| 1917 |
Begins working for the New York Tribune |
| 1926 |
Helps found leftist magazine New Masses |
| 1927 |
Tours Russia with novelists Sinclair Lewis and Theodore Dreiser |
| 1930 |
Graphic novel “Alley Oop” published |
| 1935 |
Japanese government demands apology for Emperor Hirohito cartoon in Vanity Fair |
| 1936 |
First one-man show, ACA Galleries, New York City |
| 1937 |
Travels to the Dust Bowl on Guggenheim Fellowship |
| 1938 |
Mural for new Interior Building in Washington, D.C. |
| 1939 |
Los Angeles County Museum of Art Purchase Prize |
| 1941 |
Mural for Detroit Post Office |
| 1944 |
First Prize in lithography at Metropolitan Museum’s Artists for Victory exhibition |
| 1945 |
Covers United Nations Charter Conference for Freiheit and New Masses |
| 1947 |
Helps found Artists Equity Association |
| 1950 |
Galerie Benezit exhibition, Paris |
| 1953 |
Pleads the Fifth before Senator Joseph McCarthy’s Committee; blacklisted as “Fifth Amendment Communist” |
| 1956 |
Piccadilly Gallery exhibition, London |
| 1956 |
Finishes work on Caprichos series of 50 lithographs on Red Scare era America |
| 1957 |
La Galerie del Frente Nacional des Artes exhibition, Mexico City |
| 1967 |
Stained glass windows for Temple Har Zion, River Forest, Illinois  |
| 1977 |
Dies January 7 in Manhasset, New York |
