found: Triple feature horror classics, c2004:credits, Nightmare castle (directed by Allen Grunewald) container (directed by Allan Grunewald)
found: Internet Movie Database, Nov. 27, 2007(Mario Caiano, b. Feb. 13, 1933, Rome, Italy; alternate names: Mario Cajano, Allen Grünewald, William Hawkins, Mike Perkins, Edoardo Re, Manfred Riegert, Fred Wilson)
found: OCLC, Nov. 28, 2007(hdgs.: Grunewald, Allen; Grunewald, Allan; Caiano, Mario; Grünewald, Allan; Wilson, Fred; usages: Allen Grunewald, Allan Grunewald, Allan Grünewald, Mario Caiano, Fred Wilson)
found: Wikipedia, viewed Jan. 12, 2023(Mario Caiano (February 13, 1933 - September 20, 2015) was an Italian film director, screenwriter, producer, art director and second unit director) - https://en.wikipedia.org/wiki/Mario_Caiano
