Anthony Collins' classic work published in 1713, A Discourse of Free-Thinking, is downloadable from Google books or archive.org.
For a detailed outline of Collins' life and work, see:
Anthony Collins (Stanford Encyclopedia of Philosophy)
Collins was also a pioneer viz. the notion of emergent properties!
Of course, don't forget the Wikipedia article on Anthony Collins.
You can check for other books by Collins, but I found this one I don't recall seeing featured in brief bios:
A Discourse Concerning Ridicule and Irony in Writing (1729).