Rare Book Division, The New York Public Library. "Lunch at Quo Vadis Restaurant; 26 East 63rd Street -- New York, New York (NY) (English, French)." The New York Public Library Digital Collections. http://digitalcollections.nypl.org/items/a77bf55c-1962-9d98-e040-e00a180655bf
Rare Book Division, The New York Public Library. "Lunch at Quo Vadis Restaurant; 26 East 63rd Street -- New York, New York (NY) (English, French)." New York Public Library Digital Collections. Accessed April 21, 2019. http://digitalcollections.nypl.org/items/a77bf55c-1962-9d98-e040-e00a180655bf
Rare Book Division, The New York Public Library. Lunch at Quo Vadis Restaurant; 26 East 63rd Street -- New York, New York (NY) (English, French). Retrieved from http://digitalcollections.nypl.org/items/a77bf55c-1962-9d98-e040-e00a180655bf
<ref name=NYPL>{{cite web | url=http://digitalcollections.nypl.org/items/a77bf55c-1962-9d98-e040-e00a180655bf | title=
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Lunch at Quo Vadis Restaurant; 26 East 63rd Street -- New York, New York (NY) (English, French). }}
|author=Digital Collections, The New York Public Library |accessdate=April 21, 2019 |publisher=The New York Public Library, Astor, Lennox, and Tilden Foundation}}</ref>
