^ Yameen bhai, if you want a bit of a taster before going to Pat'hok Shaumabesh with Sohel bhai, you might like to read some of the excerpts from Tajuddin Ahmed's diaries, memos, etc. here:
http://www.tajuddinahmad.com/
Additionally, if you're looking for political histories etc. in English as well then the only English academic publishing house in BD is University Press Limited which has a branch in Nilkhet and in Badda. As they have authors from across the political spectrum, you'll find some very interesting and informative books on history, politics, sociology, etc. (Most recently, I saw a book on sports and nationalism there which I am dying to pick up the next time I am in that area)