According to the days the movie features, maybe some Indians even had some gloves - THE Indians maybe had no gloves, but one individual "Indian" in a movie can use a glove, because it's not a history movie, or educational, as we can see....
The original movie is 50 min. I cut it down to the scenes showing Howard Hill, funny enough, you get the story also in 6 min. and shooting and fighting is still plenty.

@Max2 - I can shoot a bow up to 60# bare hand - but only some shots. Hill could for sure too, but he loved his tackle and was used to it.