Discovered Pages
[Discover] mix1037.com: Jack & Jen In The Morning Choral Groups http://mix1037.com/mornings/choral.html
(radio) 
[Discover] choral treasure http://www.choraltreasure.org/ (catholic music liturgy radio)
[Discover] Choral Public Domain Library :: If you love something, set it free http://cpdl.org/ (resources classical library sheetmusic)
[Discover] American Choral Music, 1870-1923 (Performing Arts Encyclopedia, The Library of Congress) http://lcweb2.loc.gov/diglib/ihas/html/choralmusic/choralmusic-home.html (music libraryofcongress history digital)
[Discover] Grand Philharmonic Choir http://www.grandphilchoir.com/ (canada choir music choral)
[Discover] Main Page - ChoralWiki http://www.cpdl.org/wiki/index.php/Main_Page (sheetmusic music scores wiki)