ERB was one of the most prolific, influential and enjoyable OSS authors. He's more than just an unputdownable read. His combination of virtues and faults make him a useful object of study - perhaps the most useful of all authors, if you're trying to get to grips with the mystery of story-telling - trying to isolate that elusive key factor...
On Venus: The Amtor series - Pirates of Venus, Lost on Venus, Carson of Venus, Escape on Venus. Plus a late novella, The Wizard of Venus.
On (or rather in) the Moon: The Moon Maid.
On Mars: the Barsoom series.
On Jupiter: Skeleton Men of Jupiter.
See also the page on ERB's sentence-structure.
For ERB's style of writing see the OSS Diary for 26th August 2016 - with examples from Tarzan's Quest.
For ERB's consistency of standard, see the OSS Diary for 21st September 2016.
For some psychological depth in The Gods of Mars, see the Diary for 13th October 2016.
For a comparison between ERB and Michael Moorcock, see the OSS Diary for 31st December 2016, "At Martian Swordpoint - How Not to Do It - and How To Do It". For further comparisons with Michael Moorcock's Mars trilogy see the OSS Diary for 2nd February 2017 (Martian zoology) and the OSS Diary for 18th February 2017 (soliloquies).
For a more way-out comparison between ERB and Homer, see the OSS Diary for 30th December 2016.
For ERB and "excusology" see the Diary, Science Points the Way - Now Go and Play - with reference to Skeleton Men of Jupiter.