BiblioVault may have an electronic file which would meet your requirements for this title:
To Risk It All: General Forbes, the Capture of Fort Duquesne, and the Course of Empire in the Ohio Country
Michael McConnell
Paper: 978-0-8229-6726-2
Cloth: 978-0-8229-4632-8
Electronic: 978-0-8229-8773-4