Here is the only public domain Tarzan story that is not included in HarryT's wonderful omnibi. It follows directly on volume 3's 'The Tarzan Twins,' and like that one, it's a novella length book intended for younger boys (but still a great adventure read, if you can get past all the 'golly's and 'gee's).

This is the first time that I've created an etext from scratch--I couldn't find it anywhere online, but knew it was PD as it was published during ERB's lifetime. So I went to the library and checked out a copy of "Tarzan and the Tarzan Twins," which is a compilation of both Tarzan Twins adventures into one book, and converted it to electronic format (which was no small task, as it turned out). The text is now also available on PGAU.

I do intend to include this in my "Tarzan" omnibus when I get around to doing a new version of it :).