Tarzan of the Apes is the first film adaptation of the Tarzan novel written by Edgar Rice Burroughs. The novel can be read online here or here. You can listen to it here. This film celebrates its centennial this year. Elmo Lincoln plays the adult Tarzan.
The New York Times has a positive review from the time of the film's release that says, "The picture as a whole, in addition to being interesting, also has a touch of educational value. An actor named Elmo Lincoln meets the difficult requirements of the hero satisfactorily."