Professional vocalists Jerry Whitman and Diana Lee provided the singing voices for Peter Finch and Liv Ullmann, respectively. The married twosome also sang on the Disneyland Records release "The World Is A Circle", which featured a handful of songs from "Lost Horizon" as well as other show tunes.
One of the few mainstream American films of the 1970s that has never been released on VHS in the U.S. A limited-edition laserdisc release in the early 1990s was the only U.S. home video release until 2011, when Sony released a DVD of the film.
The library at Shangri-La is supposed to be a repository for the world's great literature. A number of "Readers Digest Condensed Books" on its shelves.