Tycoon is a 1947 American Technicolor romance film starring John Wayne based on the 1934 novel of the same name by C.E. Scoggins.
Maureen OHara was originally cast as Waynes leading lady, but RKO put her in Sinbad the Sailor instead. Set in the Andes, the film was originally intended to be filmed at RKOs Estudios Churubusco in Mexico but at the last minute production was shifted to Lone Pine, California.Though successful, the film did not earn back its huge production costs of RKOs most expensive production up to that time. It ended up losing 1,035,000. ........
Source: Wikipedia