Books for CLR coders
If your a CLR wonk then I recommend the following books
If you are interested in researching/writing your own compiler then I recommend (for this topic I also recommend the IL books and the CLI Annotated Standard book, here you will have all the information you need on IL and CLI's PE/COFF file structure. The SSCLI book will also prove useful in helping navigate the Rotor code base to understand a phyiscal implementation of the material in the CLI Annotated Standard book, a great code base to test your compiler on).
This is my own personal take, book choice does differ between coders however if any are missing of the list that you feel should be there, leave me a note and I will add it.