Inspired by @brucel's Our Birmingham book scan, I've quickly done a few pages of my own historical tomes.
The first is "Birmingham and it's regional setting : A Scientific Survey", apparently "Prepared for the meeting held in Birmingham 30th August - 6th September 1950" by the British Association for the Advancement of Science.
It's a largely academic geographical survey, with some interesting snippets and maps.
The second is a smaller book "A Short History of Birmingham" by J. Ernest Jones, published in 1911. It's a great read with lots of interesting facts and stories about the people and places of Birmingham.