There’s a new “Think Like a Programmer” Humble Bundle of 18 books by No Starch Press. It’s bit pricier than usual, but the editions are newer (2nd editions for some, instead of 1st editions.)
Some of the books are available on the Percipio platform via the ACM, but, considering everything, it’s still tempting.
The books on C and C++ may be helpful for those unfamiliar with those languages who might like to try them for Mechanical March or Jurassic July.
The books on Clojure and Racket might come in handy for Summer of Sexps.
And the book on 64-bit assembly might come in handy for Nibbly November.