Sheet music for recorder is available through the following websites. If you know of other online sources for recorder sheet music, please let us know.
8notes.com
Choral Public Domain Library
free-scores.com
IMSLP
Serpent Publications
Part-books
David McGown has prepared part-books for use by WRS players. The set of Italian Canzon Books is available below.
Italian Canzon Book Score
Italian Canzon Book Soprano
Italian Canzon Book Alto
Italian Canzon Book Tenor
Italian Canzon Book Bass