Conversation so far:
What films was Herb Jeffries in?
The films include Harlem on the Prairie, The Bronze Buckaroo, Harlem Rides the Range and Two-Gun Man from Harlem.
Did he star in them or was he a supporting character?
Jeffries starred as a singing cowboy, in several all-black Western films, in which he sang his own western compositions.

Question: Were these films a hit?
Self-contained rewrite: Were the films that Herb Jeffries played in hit?