Katharine Sharp, Melvil Dewey, and other librarians | University of Illinois Archives
Caption on the back of the photograph reads: "Mr. Brunden, our host, Miss 'Public Libraries' Ahern; Mr. Dewey (with the Placid look upon his face); Miss K. L. Sharp; Miss M. McIlvaine."
From left to right, the people in this photograph have been identified as Mr. Brunden (unknown), Mary Eileen Ahern, Melvil Dewey, Katharine L. Sharp, and most likely Mabel McIlvaine of Chicago.
Found in RS 18/1/20, Box 2, Folder "Photographs."