Howdy hello! I'm afraid I'm not too familiar with any books particularly on Buffalo rather than Fillmore, but I know that Mark Goldman's work has been pretty well received and read by a friend or two of mine who still live upstate.
I'd take a look at either City on the Edge or High Hopes--whichever you can find without burning a hole in your pocket. If you get the chance, do tell me what you thought of them, I'd like to get more familiar as well!
heard good things about:
http://www.amazon.com/City-Edge-Buffalo-York-present/dp/1591024579