This list includes websites that for the most part offer more than a mere description of the ensemble. It makes no claim to being complete.
Bowling Green State University
Early Music Ensembles: www.bgsu.edu/colleges/music/ensembles/guido/index.html
Case Western Reserve University
Early Music Singers: music.cwru.edu/ensembles/early_music_singers.html
Colorado College
Collegium Musicum: www2.coloradocollege.edu/dept/MU/mu2/Ensembles/Collegium/collegium.html
University of Connecticut
Collegium Musicum: www.music.uconn.edu/collegium/Collegium.htm
St. Olaf College
Collegium Musicum: www.stolaf.edu/depts/music/collegium/
Early Music Singers: www.stolaf.edu/depts/music/early_music/
University of California, Davis
Early Music Ensemble: musdra.ucdavis.edu/eme/
University of Houston
Collegium Musicum: www.music.uh.edu/collegium/index.html
University of North Texas
Collegium Musicum, Collegium Singers, etc.: www.music.unt.edu/ensembles/early_music.shtml
Western Michigan University
Collegium Musicum: www.wmich.edu/music/ensembles/som_ensem_collegium-musicum.html