When I started color processing at home some 15+ years ago, I had a few questions to Tetenal's customer support. They answered a few months later and were honestly surprised, that anyone would actually get into color processing in this very year, when everyone else screamed about the latest&greatest dSLRs from Canon&Nikon and the certain demise of color photography in general. While things have turned out much rosier than they were predicted back then, there is still no market for new books on this topic.
It took Bill years of full time work to bring together the materials for his Film Developing Cookbook, and from all I know this book is not exactly on NYT's best seller list. Translate this scenario to color photography, and you'd spend years writing a book for fewer than a dozen readers total. Not happening as far as I can see it.
So what is left for us? There's Grant Haist's and Ron Mowrey's "Modern Photographic Processing", which tells you at least the chemical background of color processes. This two volume book is out of print but may be available used or as download somewhere. There's Bob Shanebrook's Making Kodak Film, which I have not read myself yet, but there were glaring and credible reviews here on photrio. There are several articles here on photrio with formulas and procedures for the more practically inclined.
I would rather stay away from older literature, since processes were very different from today's C-41, E-6 and RA-4. These old processes had to deal with unhardened emulsions. These old emulsions worked with much more primitive couplers (oily vs. balasted), which required special processing chems (e.g. Benzyl Alcohol) in their developers. Since Kodak graciously published detailed formulas in their Kodachrome patents, there will be endless coverage of this now obsolete process. Lots of effort was necessary (and described in great detail in these old books) in processing, which are complete non-issues with today's materials and will likely cause more confusion than clarity in this year's readers.
It is not entirely clear, where and how far you want to take this journey. Do you just want to get better results with your home processing? Start your own home brew op? Try to optimize the chemistry? There will be very different paths laid out for each target destination, and no single book will cover everything in detail.