The Son of Tarzan - Chapter-indexed HTML text. Project Gutenberg edition. - http://www.cs.cmu.edu/People/rgs/tar4-table.html
Son of Tarzan - E-text at Project Gutenberg. - http://www.gutenberg.org/etext/90
Literature Network: The Son of Tarzan - Chapter indexed HTML of the complete text. Includes a search feature. - http://www.online-literature.com/edgar_rice_burroughs/son_tarzan/