I posted some of these on the Facebook page but wanted to add them here for the 300+ subscribers who are not yet on our Facebook page.
You may find these maps helpful for many historical events. Some of the sources are indicated. If the source is not indicated, I am sorry to say I do not remember the source.
(The map below is from Trans-Allegheny Pioneers, by John P. Hale, 3rd edition)
1760
1794
1804
1814
Terrific maps, as always!