Happiness is discovering someone has put, onto a website, a number of books on industrial chemistry.
Unhappiness is realising that printing them out will take about 100 reams of paper to print them out on.
Fear is the knowledge that simply accumulating and possessing the knowledge could land one in prison for a long time... even if one knows a lot of the more interesting things from several years of formal training in chemistry... And that the act of downloading could be monitored.
There is the question of whether context would make a difference - again, the several years of formal training. Printing them out, of course, is a necessity - if and when the power goes out, how would you get to them if you don't? Most of them date from the early 20th Century, so are largely out of date for most uses... of course, that they are that old would make it easier to set-up an industrial chemistry lab at TEOTWAWKI.
The Things Man Was Not Meant To Know.... Now. In a climate of political fear and control.
If the authorities in question would like to give me a job (plenty of qualifications, much common sense, but little experience), I'd be very interested - and would have an outlet for my interest in a multitude of areas.
Perhaps I should start my own little engineering concern - that might allay any fears that I wanted to do anything, well, naughty with this knowledge.
Of course, that's really what I want to do - not anything naughty, but work with bootstrap technology, do some research and development into alternative technologies that could help rebuild after any... long-term problems...
That's the irony of it... the people who would want to imprison me (for wanting the knowledge to rebuild after a large-scale disaster) are the ones likely to cause (or at least, not help) some of the possible problems in the first place.
No matter which way I look at it, I can only think that I need to find a sponsor, patronage, or something - someone wealthy enough to have the resources I need to research and build, but without the knowledge needed to survive and rebuild. Or someone who can appreciate the knowledge needed.