found: Dance world, 1966.
found: LC data base, 7/24/86(hdg.: Willis, John A.; usage: John Willis)
found: Blum, Daniel C. A pictorial history of the American theatre, 1860-1970, by Daniel Blum, 1969:title page (John Willis)
found: OCLC database, 16 June 2015(Access points: Willis, John, 1916- , Willis, John A.; Usage: John Willis)
found: New York times, 29 June 2010(John Willis; born October 16, 1916, Morristown, Tenn.; died Friday [June 25, 2010], Manhattan, New York, aged 93; spent more than half a century doggedly keeping comprehensive track of American theater productions and film releases and whose encyclopedic records were published in the annual volumes Theatre World and Screen World.) - http://www.nytimes.com/2010/06/29/arts/29willis.html
found: National Library of the Czech Republic in VIAF, 16 June 2015(Access point: Willis, John A., 1916- )
found: Wikipedia, 16 June 2015:John A. Willis entry (John Alvin Willis (October 16, 1916-June 25, 2010) was an American theatre and film book editor, theatre awards producer, actor, and educator. He is best known for editing the long-running annual publications Theatre World and Screen World, and for producing the annual Theatre World Awards for Broadway and Off-Broadway debuts for over forty years, from the early 1960s to the early 2000s.) - https://en.wikipedia.org/wiki/John_A._Willis