"The Elements": The famous song set to a Flash animation.
A Conversation with Tom Lehrer: Paul D. Lehrman interviews Lehrer about his recording career.
All Music Guide: Tom Lehrer: Biography, discography, and reviews.
Internet Archive: Tom Lehrer: Video of a 1997 performance of five mathematics-related songs.
St. James Encyclopedia of Pop Culture: Tom Lehrer: Includes a biography, career notes, and highlights of famous songs.
Stop Clapping, This Is Serious: Article from the Sydney Morning Herald examines his views on the current state of politics, comedy, and satire.
That Was the Wit That Was: SF Weekly article covers his life and career.
Tom Lehrer: List of songs with full text.
Tom Lehrer: Includes a discography, biography, lyrics, and historical tour dates.
Tom Lehrer: Profile, lyrics, discussion, writings, a FAQ, and links.
Tom Lehrer: An interview from the Onion AV Club.
Tom Lehrer Fan Page: Includes images, lyrics, biography, discography, and other information.
Tom Lehrer Music Community: LiveJournal community for discussions and links to video, audio, and pictures.
Tom Lehrer Song Lyrics: Collection of lyrics with MIDI accompaniments, footnotes, links, and images.
TomLehrer.org: Information about cover recordings and the TomFoolery musical.
Wikipedia: Tom Lehrer: Encyclopedia entry provides biographical information and links.