Pride and Prejudice might be an interesting first project
At least it should be easy to find the online resources..
I explored the internet a bit to see what I could find for
page images and for free text versions.
I didn't quickly find very many page images to work from.
But there are quite a few fee text versions, as we would
expect. What's interesting is that they appear to almost
all have the same provenance through PG.
There's an interesting lesson about the consequences
of cleaning up old texts (or not.)
When the text was transcribed, the convention appears
to have been to record small-cap text as all upper-case.
It happens that the printing convention of the source
text printed the salutation line for correspondence as
small-caps; and there's a fair amount of correspondence
in P&P. You can find an example of the printed image
here:
Almost every ebook text I could find, in whatever ebook
format, has salutations in upper case. (PG's versions
appear to want them centered on the page as well,
for some reason.)
The only version I could find that doesn't have
uppercase is the one found at the link in bowerbird's
post.