Columbia subject headings:
Franklin, Benjamin, 1706-1790.
Hewson, M. S. (Mary Stevenson)
Statesmen--United States--Correspondence.
Harvard subject headings:
Franklin, Benjamin, 1706-1790
Hewson, M. S. (Mary Stevenson)
Statesmen--United States--Correspondence.
Princeton subject headings:
Franklin, Benjamin, 1706-1790--Correspondence.
Hewson, M. S. (Mary Stevenson)
Philosophers--United States--Correspondence.
Scientists--United States--Correspondence.
Statesmen--United States--Correspondence.