Columbia subject headings:
Armstrong & Co. (Boston, Mass.)
Armstrong, Charles, 1836-1906.
Lithography--History.
Harvard subject headings:
Armstrong & Co.--Exhibitions.
Armstrong, Charles, 1836-1906--Exhibitions.
Boston Public Library--Exhibitions.
Chromolithography--Massachusetts--Boston--Exhibitions.
Lithography, American--Massachusetts--Boston--Exhibitions.
Lithography--19th century--Massachusetts--Boston--Exhibitions.
Wheeler, Leeds Armstrong, 1897-1969--Art collections--Exhibitions.
Princeton subject headings: