And the example of the paper with literate code:
Still it would be nice if somebody decides to get and also make available the papers or code for which the links are now dead, e.g. those linked from here:
I have always really enjoyed just reading the source code for programming languages. As I learn more and more, I seem to take away a bit more each time.
Personally I've enjoyed reading through the source code for Go, since it is hand written in Go. Being hand written, it can be a little repetition reading through it, but I find it to be pretty easier to read/understand.
Compilers Second Edition 
Engineering a Compiler, Second Edition 
Computer Systems: A Programmer's Perspective (3rd Edition)