Jimmy (Jimbo) Wales wrote:
If you can approach the major press release bureaus and persuade them to release all their work, or some portion of it, under a free license, or if you can secure a direct release from individual companies who would like to do the same, then by all means we can surely publish these on wikisource.
My reaction as a Wikisource editor would be to ask a contributor to substantiate his right to add the press release. If he fails to do anything about it within a reasonable time, it gets deleted. Only the contributor knows where he found the material, so the burden is on him to establish the copyright status when it's questioned.
As much as I believe that there exist circumstances where we can and should push the boundaries of copyright law, someone's ignorance of copyright law is NOT one of them.
Ec