Rubin's Rock 'n' Roll Reference Discography
- "Walter Wart, The Freaky Frog" by Robert O.'s Thorndike Pickledish Pacifist Choir is included in this discographay: the result of over ten years of research by Dan Rubin.
- http://www.rockmusiclist.com/rock_thq.htm

Voice Chasers: Robert O. Smith
- List of animation voice credits.
- http://www.voicechasers.com/database/showactor.php?actorid=2369

TV.com: Robert O. Smith
- The television reference guide includes credits for Robert O.
- http://www.tv.com/robert-o-smith/person/101499/summary.html

The Robert O. Smith Freelance Large at Voice Web Page
- Until August 2000, this was the official Web site.
- http://www.robertosmith.com/origfront.html

Internet Movie Database: Robert O. Smith
- List of film animation voice credits.
- http://www.imdb.com/name/nm0809762/

California in the Sixties
- Groovy Times mentions Robert O.'s biggest hit song, Walter Wart, in its discussion of the music of the era.
- http://www.nicke.abelgratis.com/usa_calif_sixties.html

Walter Wart on KDWB
- KDWB Minneapolis record survey from the week ending December 31, 1966, with "Walter Wart" debuting.
- http://www.users.qwest.net/~oldiesloon/kd123166.htm

DJ Cheat Sheet 16: Songs About Frogs
- Last in a series of lists of records, each on a different theme.
- http://www.ratso.net/cheat16.html

Kunoichi's Ranma 1/2 Information
- Shows which character Robert O. played in the long-running Ranma series (Genma), number of appearances, and which stories and volumes that the character appeared in.
- http://www.thekeep.org/~kunoichi/kunoichi/ranma_stuff.html

English Voice Actor & Production Staff Database
- Details of many of Robert O.'s voice actor credits. Presented by Crystal Acids.
- http://www.crystalacids.com/database/actor/smith_robert_o.html

Reelradio: Robert O. Smith, KTAC Tacoma WA 1974
- Aircheck and comments thread, from The Pat Riley Collection.
- http://www.reelradio.com/pr/index.html#rosktac74

Reelradio: Robert O. Smith, KTAC Tacoma, November 23, 1972
- Aircheck and biographical article on Robert O. Smith, from The Jon Pearkins Collection.
- http://www.reelradio.com/jp/index.html#rosktac72

DJ Tribute Page
- Comprehensive tribute to Robert O. Smith by Jon Pearkins, offering background, information, audio clips from his Seattle radio days and related links.
- http://www.robertosmith.com/