For nostalgic people…

A very nostalgic compilation of “historic documents” in Computer Science:

http://www.fh-jena.de/~kleine/history/history.html

http://www.bitsavers.org/pdf/

You can find manuals and articles about Fortran, Algol60, Pascal, Modula-2 and many other languages, and documents about flowcharting techniques, and machine and network architectures.

Enjoy it!