Try searching on some engineering subjects. The books you will find are old, but they look interesting. I am going to waste some serious time at home tonight.
If you do find any classics please list them - so far I've yet to find anything that would qualify as a classic, rather like reading old "Model Engineering" magazines.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.