IBM has a division which produces technical books based on internal staff, business partner and client contributions. They've been doing this for quite a long time (I participated in one almost 20 years ago). Historically they had red covers and so to this day they are called the Redbooks. http://www.redbooks.ibm.com

A well-known OpenGL book was also the Red Book.

http://www.opengl-redbook.com/

The Lord of the Rings contains a Red Book which is basically itself :)

https://en.wikipedia.org/wiki/Red_Book_of_Westmarch

I'll show myself out...

In OSI networking: https://en.wikipedia.org/wiki/Coloured_Book_protocols

There is also a Red Book for audio CD (Compact Disc Digital Audio): https://en.wikipedia.org/wiki/Compact_Disc_Digital_Audio

In civil engineering, all construction contracts are usually based on FIDIC's Red Book. This way, everybody is used to a standard contract, from lawyers to judges, in whatever jurisdiction, nationally or internationally...

Mao and Feynman

Political philosophy.