by William A. Hunter. Hardbound, 596 pages, 6" x 9". This book is about more than Pennsylvania's forts, it is about all the frontier forts occupying Pennsylvania's soil. It's about the French invasion, their forts and claims to Pennsylvania. It's about Virginia and the Ohio company and the three forts erected on Pennsylvania soil in Virginia's unsuccessful opposition to this French invasion into the Ohio Valley. It's about the British takeover of fort building. Each fort is allotted a separate section. Additionally, the histories of some forts as previously known must be corrected and amplified in light of new information.