(L-R) Actors Frances Sternhagen, Christopher Plummer, Barnard Hughes, Marsha Mason and Rene Auberjonois in a scene from the Broadway production of the play "The Good Doctor"

Billy Rose Theatre Division, The New York Public Library. "(L-R) Actors Frances Sternhagen, Christopher Plummer, Barnard Hughes, Marsha Mason and Rene Auberjonois in a scene from the Broadway production of the play "The Good Doctor"" The New York Public Library Digital Collections. 1973. https://digitalcollections.nypl.org/items/01ae84f0-8e1c-0138-cc0a-00b951899084

Billy Rose Theatre Division, The New York Public Library. (1973). (L-R) Actors Frances Sternhagen, Christopher Plummer, Barnard Hughes, Marsha Mason and Rene Auberjonois in a scene from the Broadway production of the play "The Good Doctor" Retrieved from https://digitalcollections.nypl.org/items/01ae84f0-8e1c-0138-cc0a-00b951899084

Billy Rose Theatre Division, The New York Public Library. "(L-R) Actors Frances Sternhagen, Christopher Plummer, Barnard Hughes, Marsha Mason and Rene Auberjonois in a scene from the Broadway production of the play "The Good Doctor"" New York Public Library Digital Collections. Accessed December 16, 2025. https://digitalcollections.nypl.org/items/01ae84f0-8e1c-0138-cc0a-00b951899084

<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/01ae84f0-8e1c-0138-cc0a-00b951899084 | title= (still image; still image) (L-R) Actors Frances Sternhagen, Christopher Plummer, Barnard Hughes, Marsha Mason and Rene Auberjonois in a scene from the Broadway production of the play "The Good Doctor" (1973) | author=Digital Collections, The New York Public Library | accessdate=December 16, 2025 | publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>