Zan the Jungle Boy, a forgotten public domain comic book hero of color

Zan the Jungle Boy is so obscure he doesn't have an entry yet in Public Domain Super Heroes, but based on the only story I've read, he deserves his footnote in history. He's a supporting character in "Dr. Drew the Zoo Man", a series about a detective who can talk to animals. Zan speaks in pidgin, but he's not played for laughs, and though he first shows up in a loin cloth, he wears a suit later