Links to PDF of some of the books I mentioned.

Topic

The (Internet Archive) is a good source of PDF versions of millions of books. You can borrow books for 1 hour and many for 14 days. Even if you own hardcopy of these (as I do) a searchable PDF can be better than an index! Of course purchasing the hardcopy titles cited in our course resources, through the Cobb Institute, is encouraged and a way (I think) to support the institute. But if you are already finding ways to support the Institute these books I mentioned are available at archive.org:

Sherburne’s Key to P&R

Hosinski’s “Stubborn Fact and Creative Advance”