Columbia subject headings:
Botanists--United States--Correspondence.
Botany.
Muhlenberg, Henry, 1753-1815--Correspondence.
Harvard subject headings:
Botanists--United States--Correspondence.
Muhlenberg, Henry, 1753-1815--Correspondence.
Princeton subject headings:
Botanists--United States--Correspondence.
Botany.
Muhlenberg, Henry, 1753-1815--Correspondence.