Gilbert, Douglas R., “Folk Singer Bob Rosenthal,” Digital Collections, accessed December 16, 2025, https://digitalcollections.library.gvsu.edu/document/53755.
Black and white photograph of folk singer, Robert "Bob" Rosenthal, singing and playing an acoustic guitar on a rooftop in New York City, New York. In the photograph, a young woman can be seen watching his performance from her apartment fire escape nearby. Scanned from the negative.