Links to online sources of ukulele lead sheets and tabs
Beatlesite Ukulele Beatles fun
Dr. Uke’s songs (includes options for standard GCEA and baritone DGBE tuning)
Huapala Hawaiian music and music archives
Ralph Shaw King of the ukulele
Richard G’s Ukulele Songbook (approx 800 songs)
San Jose Ukulele Club Songbook
Taunton Ukulele Strummers Club (several songbooks, various genres)