Organization Fortune Magazine

American Academy of Arts and Letters ( [1953])

National Institute of Arts and Letters

Academy of American Poets

League of American Writers

Century Club

Tavern Club

Somerset Club

Skull and Bones

Harvard Law Review (editor)

Harvard University

The New Republic (editor)

Office of Strategic Services

Library of Congress (director)

War Department Office of Facts and Figures (director)

Office of War Information (assistant director)

Amherst College (professor)

U.S. Supreme Court Bar

Conference of Allied Ministers of Education in London (U.S. delegate)

U.S. delegation to London conference drafting UNESCO constitution (chairman)

first U.S. delegate to General Conference of UNESCO in Paris, 1946

first U.S. member of Executive Council of UNESCO

United States Department of State (lecturer in Europe)

Museum of Modern Art (trustee)

Sarah Lawrence College (trustee)

United States Army

CBS

Life Magazine

Time Inc.

Sports Illustrated

U.S. Naval Reserve

Time Inc.

Redbook

Youth Companion

New York University (teacher)

University of Pennsylvania (teacher)

Office of Management and Budget

University of Denver

New York Academy of Sciences

White House Press Corps