Continuity mistake: While every other actor in this movie wears the same costume day and night, day after day, John Wayne's costume changes regularly, even between shots. For all daytime scenes, he wears an orange long-sleeved shirt with a contrasting blue neck-kerchief; in some night-time scenes, he wears a blue long-sleeved shirt with a contrasting yellow neck-kerchief; and sometimes his daytime neck-kerchief changes from blue to yellow in a matter of seconds, between shots.
Continuity mistake: Aguilar is restless during the party, and he picks a tarot card from the table, which turns out to be Death arcane. In close-up the card is held by a single hand, but Frank Wolff is holding the card between both hands both before and after that shot. (00:42:20)