Columbia subject headings:
Book industries and trade--United States--History--19th century--Congresses.
Books and reading--United States--History--19th century--Congresses.
Booksellers and bookselling--United States--History--19th century--Congresses.
Publishers and publishing--United States--History--19th century--Congresses.
Harvard subject headings:
Book industries and trade--United States--History--19th century--Congresses.
Books and reading--United States--History--19th century--Congresses.
Booksellers and bookselling--United States--History--19th century--Congresses.
Publishers and publishing--United States--History--19th century--Congresses.
Princeton subject headings:
Book industries and trade--United States--History--19th century--Congresses.
Books and reading--United States--History--19th century--Congresses.
Booksellers and bookselling--United States--History--19th century--Congresses.
Publishers and publishing--United States--History--19th century--Congresses.