Book Idea (Don't steal)

I am thinking about writing a book on special paint schemes from 1970-2006.
would anyone buy a book like this, and should I persue this book? Any information and pictures would be a great help to me.

Some of the topics covered would be:

1.)Bicentinel Locomotives of Major Railroads
2.)Olympic Units
3.)UP Heritage units
4.)Merger prototype schemes
5.)United Way/Commeritve Units
6.)Paint Scheme and Lettering Goof’s
7.)Expierimental Paint Schemes
and maybe
8.) Demo Paint Schemes

Would anybody buy this book and would it be a good help to historians and Model Railroaders?

You should familiarize yourself with what’s out there already, so your book isn’t an exercise in redundancy. Also, if you’re not already pretty good at graphic design and layout, you should learn this, as the book probably won’t work as a manuscript unless your copy is camera-ready. But more than anything, check out exhaustively what’s there already. Most nonfiction books begin as articles anyway, one chapter per article usually.