Stephen, is this what you are looking for?

http://icking-music-archive.org/scor...onia_BWV29.pdf

A lot of Bach scores listed here

http://icking-music-archive.org/ByComposer/J.S.Bach.php

Scores of other composers here

http://icking-music-archive.org/ByComposer.php

click on the composers name, not all are as comprehensive as the Bach listing but then what do you want for free?