Due to my horrible documentation practices, I had to search the online library catalogs to find the books I used for my flickr collection. Lo and behold, I stumbled upon .pdf excerpts (or even in some cases, entire books!) hosted by Google books and the Internet Archive!
I'm not sure how these were all scanned, if by man or machine, but hooray! (Yeesh, after working as a documenter/scanner in my college's media library for two years, I have an even deeper respect for the people who put the time and effort into projects like this! -- maybe I should honor them by making sure to properly cite things from now on. Sigh.)
So here you go, kiddos! A few fine examples!
A Kannada-English school dictionary, hosted by Internet Archive.
A Progressive Grammar of the Malayalam Language, at Google Books.
Sinhalese, self-taught, at Internet Archive.
I reccomend searching for other Indian languages and topics at Internet Archive - there is some good stuff!