Columbia subject headings:
Pre-emption rights (United States)
Spafford, Amos--Claims vs. United States.
Harvard subject headings:
Pre-emption rights (United States)
Public lands--Ohio.
Spafford, Amos, 1753-1816--Claims vs. United States.
Princeton subject headings:
Pre-emption rights (United States)
Spafford, Amos--Claims vs. United States.