The Red Mask, the first black masked hero?

The following art is from Out Of This World: Early Black Comic Book Heroes: The Red Mask, The Comics of Syndicated Features: Adventures of the Red Mask, and Facebook's comic strip appreciation group, where Stefan Wood posted black and white scans of the Red Mask's entire story.

The newspaper strip ended there. In 1939, The Adventures of the Red Mask were reprinted in four issues of Best Comics. After the first issue, they drew him as white on the covers, but they left him black inside.