Elena Watson's Television Horror Movie Hosts reference: mention (pages 174, 178) and whole chapter with three pictures - Chapter. 15, "Seymour: 'Good evening, Fringies!'," pages 97-105. Magazine references: Obituary article "Seymour Nevermore" with three pictures of Larry Vincent (as Seymour and in two of his movie roles) in issue #120 (October 1975) of Famous Monsters of Filmland, pages 38-41. Feature "Seymour, a Look at the Late, Great Horror Host from L.A." by W. Lund in issue #23 (November 1982) of Fangoria. Picture in feature "The Horror of Them All!" in issue #13 (December 1988) of Filmfax, pages. 28-32. Discussed in article by Terence Sanford, "Happy Hallucinations and Goodnight Sweethearts," in Scary Monsters Presents Monster Memories #2, 1994 Yearbook (January 1994), pages. 19-22.
"Seymour" was also known as "Sinister Seymour".
In 2017, Larry Vincent - "Seymour", was inducted into "The Official Horror Host Hall of Fame".