Previous posts have nicely covered almost all of the textbooks and papers I would have mentioned myself, including K&R's _C Programming_, Brooks' _Mythical Man-Month_, Feynman's Lectures, etc. The only glaring omission was any mention of the classic (1965) FFT paper by Cooley and Tukey: "An algorithm for the machine calculation of complex Fourier series." _Mathematics of Computation_, 19(90), 297–297. doi:10.1090/s0025-5718-1965-0178586-1 (https://www.eit.lth.se/fileadmin/eit/courses/eit085f/Cooley_...) I might also have added the _CRC Handbook of Chemistry and Physics_ that seems to have been on every working scientists's and engineer's bookshelf (including mine) during the mid-to-late 20th century. Still in print, nearing the 100th edition. Also, some of my old favorite textbooks that I used at University were not mentioned, including Thomas' _Calculus and Analytical Geometry_. I still have my red cloth covered Addison-Wesley 3rd edition, no longer in print, but a much later edition might still be in print.