List of USPTO-recognized public prior art sources?

It appears that following changes made to the United States patenting process that defensive publications registered directly via the USPTO are no longer possible, but the USPTO does apparently have some standard methods and websites for searching for prior art. I'm trying to find a list of these, as they should probably go in this article.

One of them appears to be http://ip.com though I don't have confirmation of this.

Are there others? I have submitted a question to the USPTO for a list of their recognized prior art sources but I have not heard anything yet.

I am particularly interested in this as I wish to pursue an Open Design / Open source engineering project and I want to make sure that the work I am sharing publicly is clearly being recognized as the USPTO as prior art, so that someone cannot take my freely published work and get a patent because the USPTO doesn't know how to find or doesn't recognize my project documentation as valid prior art.

-- DMahalko (talk) 13:04, 4 March 2015 (UTC)