I see Irving Berlin's 'Blanca Navidad' is written in Eb, probably to stop melodeonists from joining in ;)
Over the past few months, I've been bookmarking 'useful' music sites and I've come to the conclusion that no one need ever buy any more sheet music/books, as everything ever written is on the net somewhere. I get this strange vision of armies of musicians toiling their miserable lives away in locked rooms downloading manuscript PDF's into the bottomless pit of the WWW that no one will ever find.
Thanks Jack, I've added this URL to my ever increasing list.