Golden Book of Chemistry Experiments Scan: this book has been banned, like so many useful chemistry sets, because kids can learn things from it. Its copyright wasn’t renewed when it should have been so it has fallen into the public domain. The torrent link in that entry appears to be wonky so here’s a non-Torrent local mirror.
[UPDATE (9/13/2007): Removed mirrored file. It appears to be in the public domain but not rightfully so.]

September 13th, 2007 at 1:07 pm
I think you are mistaken about the copyright renewal of this work. The Library of Congress copyright renewal database http://cocatalog.loc.gov/ indicates that the copyright was renewed in the 28th year following its original publication so that the work is not in the public domain as you state.
Registration Number / Date: RE0000402517 / 1988-11-28
Renewal registration for: A00000477203 / 1960-11-15
September 13th, 2007 at 3:09 pm
It actually appears that copyright was renewed 13 days into the 29th year, but that’s a quibble based on a technicality. I was taking the original post at its word for some strange reason. Mirror gone.
October 16th, 2007 at 5:56 am
i want this book