"Images of America
The National Road in Pennsylvania
(by) Cassandra Vivian. Arcadia Publishing
(pg. 2) drawing of "Hon. Albert Gallatin
Albert Gallatin, Fayette County resident & secretary of the U.S. Department of the Treasury under Thomas Jefferson, was a major champion of the National Road."
So try Fayette Co genealogy societies
There is info at http://digital.library.pitt.edu/pittsburgh/
& site map & full text simple search
not my family