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Billy Rose Theatre Division, The New York Public Library. "Front of "Bad Days"" The New York Public Library Digital Collections. 1922 - 1923. http://digitalcollections.nypl.org/items/fc399e00-2173-0132-4118-58d385a7b928
Billy Rose Theatre Division, The New York Public Library. "Front of "Bad Days"" New York Public Library Digital Collections. Accessed February 20, 2019. http://digitalcollections.nypl.org/items/fc399e00-2173-0132-4118-58d385a7b928
Billy Rose Theatre Division, The New York Public Library. (1922 - 1923). Front of "Bad Days" Retrieved from http://digitalcollections.nypl.org/items/fc399e00-2173-0132-4118-58d385a7b928
<ref name=NYPL>{{cite web | url=http://digitalcollections.nypl.org/items/fc399e00-2173-0132-4118-58d385a7b928 | title=
Front of "Bad Days", (1922 - 1923) }}
|author=Digital Collections, The New York Public Library |accessdate=February 20, 2019 |publisher=The New York Public Library, Astor, Lennox, and Tilden Foundation}}</ref>