[Map of the river systems from Fort Presque Isle on Lake Erie to the Potomac River, showing French Creek, Allegheny River, the Ohio River between Pittsburgh and Great Beaver Creek, the Monongahela River and the Youghiogeny River]
Includes text describing the advance of the French from Lake Erie, and the building of French and British forts along the Monongahela and Ohio Rivers, with reference to the planned construction of a French fort [Fort Duquesne] at the forks.
"No. 7 ... in Gov. Dinwiddie's letter of Janry. 29th 1754."--Fragment pasted on lining paper of binding.
Originally part of Colonial Office file CO 5/14/142.
Volume reference no. on publisher's website: MPG 1/118.