It certainly pays to have small independent book stores where you can develop a relationship with the proprietors. The Penn Book Center is one such gem, one of the few independent book stores still open in Philadelphia (since 1962). They have helped me find and located great books over the last seven years, bringing this or that title to my attention. David, one of the workers there, set aside this title for me in hopes I would find it of value and I do. It’s A Journey Through Islamic History, A Timeline of Key Events, by Yasminah Hashim and Muhammad Beg. Some of the details are in the video below. I highly recommend it for its conciseness, style and craftsmanship.