The .txt file is plain text. The .pdb file is specially formated
for reading on a Palm Pilot computer. I've read (most of) these
books, and found them extremely moving.
I've grabbed these texts from various sources, and might even get
in trouble for making them available. The reason they are here is
that I want a nice simple way to gather together my favorite books and
make them available to a few of my friends. These books are all probably
in the public domain by now, so...