Editing Willis H. O'Brien (section)

===Feature films===
* ''[[The Lost World (1925 film)|The Lost World]]'' (1925)
* ''[[King Kong (1933 film)|King Kong]]'' (1933)
* ''[[Son of Kong]]'' (1933)
* ''[[She (1935 film)|She]]'' (1934, preproduction) 
* ''[[The Last Days of Pompeii (1935 film)|The Last Days of Pompeii]]'' (1935)
* ''[[Dancing Pirate]]'' (1936, matte painting)
* ''[[Going My Way]]'' (1944, matte paintings)
* ''[[The Bells of St. Mary's]]'' (1945, matte paintings){{citation needed|date=July 2018}}
* ''[[The Miracle of the Bells]]'' (1948, matte paintings){{citation needed|date=July 2018}}
* ''[[Mighty Joe Young (1949 film)|Mighty Joe Young]]'' (1949, [[Academy Award]] winner) 
* ''[[This Is Cinerama]]'' (1952) 
* ''[[The Animal World (film)|The Animal World]]'' (1956) 
* ''The Beast of Hollow Mountain'' (1956, O'Brien worked on screenplay only)
* ''[[The Black Scorpion (film)|The Black Scorpion]]'' (1957)
* ''[[The Giant Behemoth]]'' (1959, a.k.a. ''Behemoth, the Sea Monster'')
* ''[[The Lost World (1960 film)|The Lost World]]'' (1960) 
* ''[[It's a Mad, Mad, Mad, Mad World]]'' (1963, posthumous release)