Riggers and Sail Makers banner, Portland, 1841
A ship under construction, flying both an American flag and a "temperance" flag, has workers on board and workers carrying materials onto the ship.
The reverse side includes the text, "We Lay the Foundations of Commercial Enterprise."
The illustration is on one side of a banner painted for the Pump and Block Makers, Mast and Spar Makers, Rope Makers, Riggers and Sail Makers group of the Maine Charitable Mechanic Association in Portland in 1841.
The 17 trade groups of the association carried the colorful hand-painted banners in a parade on Oct. 8, 1841, through the streets of Portland.
The Maine Charitable Mechanic Association, formed in 1815, supported and promoted skilled artisans.