Occoquan Creek, Va. [1 reference]

O'Hara, Charles [1 reference + 1 subentry]

O'Hara, Lieutenant [1 reference]

Ohio country [See redirect]

Ohio River [6 references]

Old Northwest [See redirect]

Old Point Comfort, Va. [4 references]

Oneida Lake, N.Y. [1 reference]

Orange Co., Va. [2 references]

Orleans, Territory of [2 references]

Orpheus (ship) [3 references]

Osborne's, Va. [2 references]

Osgood, Samuel [4 references]