Bob and Andy, a harmonica playing duo

Chicago citation style
Bob and Andy, a harmonica playing duo. 1940. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/sayre/id/12602. (Accessed July 19, 2018.)
APA citation style
(1940) Bob and Andy, a harmonica playing duo. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/sayre/id/12602
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/sayre/id/12602>.
Note: These citations are programmatically generated and may be incomplete.