[1] Schneer joined Columbia Pictures, where he wrote the script for the Robin Hood film The Prince of Thieves (1948) for Sam Katzman.
In 1956, it was announced Schneer was considering joining RKO but changed his mind and signed a new three-picture deal with Columbia for his Morningside Productions.
[10] He produced a noir, The Case Against Brooklyn (1958), and a war film, Tarawa Beachhead (1958), both directed by Paul Wendkos.
[11] More popular than either was The 7th Voyage of Sinbad (1958) with Harryhausen, directed by Juran and starring Kerwin Mathews, who had been in Tarawa.
In May 1959 it was announced Schneer would make nine films for Columbia, including Battle of the Coral Sea, I Aim at the Stars, Mysterious Island, Gulliver's Travels and Air Force Academy.
[15] Mysterious Island (1961), directed by Cy Endfield was an adaptation of the Jules Verne novel, with Harryhausen effects.
Schneer produced a medieval swashbuckler, Siege of the Saxons (1963) then an Imperial adventure, East of Sudan (1963), both directed by Juran.
[17] In Spain, he produced a Western, Land Raiders (1970), then returned to fantasy for The Valley of Gwangi (1969), with Harryhausen.The Executioner (1970), directed by Sam Wanamaker was a thriller.