International Tuba Euphonium Association:Professional organization lists scheduled world and regional conferences, employment, links to scholarly journal articles, and pedagogical materials as PDF files.
Baritone Horn Page: History, care and maintenance,and practice and playing tips.
Baritone or Euphonium: Article on the differences, with a nice comparison chart, pictures, and dimensions of popular brands and models.
David Werden Publications: Publisher of books for euphonium and tuba. Listings of music and available downloads of ensemble music including the euphonium and tuba.
Euphonium and Tuba Lecture: Basic description of the euphonium and tuba, with information about the Wagner tuba. Includes a link to a fingering chart.
Finnish Trombone and Tuba Association: Introduction to the group, contact details, concerts, and archives.
Kirk's Homepage: Pictures, links, and information about the euphonium and baritone. Also a MIDI and .wav page.
Music of Kenneth D. Friedrich: Original compositions for the tuba and euphonium.
The "Big Brass" Bash: A non-profit organization dedicated to bringing the tuba and euphonium community together in an annual two day festival.
The Serpent Website: A collection of information about the serpent, a precursor to the tuba and euphonium.
Tuba Portal: Articles, chat, classifieds, jokes, search, and links to bands. [English and Danish]
Tuba-Euphonium Press: Music publishing for the Tuba and Euphonium. Owned by International Tuba and Euphonium Association
TubaNews.com: Monthly online magazine with articles, news, player profiles, events calendar, free classifieds, and forums.