1898 Born in Philadelphia, PA
1909 Parents provide him with a workshop at age eleven
1919 Graduated from Stevens Institute of Technology in Hoboken, NJ
Worked as engineer at logging camp in Washington state
1923 Moved to New York, NY and attended Art Students League
Worked as illustrator for newspapers and advertisers
1925 Employed at Central Park Zoo and Bronx Zoo, New York, NY
1926 Attended Académie de la Grande Chaumière, Paris, France
1931 Settled in Paris, France
1933 Moved back to the U.S. and buys house in Roxbury, CT
1939 Commissioned to make mobile installed in main stairwell of Museum of Modern Art, New York, NY
1949 Constructed largest mobile to date, hung over main stairwell of the Philadelphia Museum of Art, Philadelphia, PA
1952 Awarded grand prize for sculpture, Venice Biennale, Venice, Italy
1957–1958 Received several commissions for large-scale public sculpture, including a mobile for JFK Airport commissioned by Port Authority of New York and a stabile for UNESCO Paris headquarters
1967–1968 Sculpture commissions for Expo ’67 in Montreal and 1968 Olympic Games in Mexico City
1976 Died in New York, NY