Patent Office model made by Abraham Lincoln and Walter Davis illustrating the method of lifting vessels over shoals,patented May 22, 1849, Number 6,469. Now exhibited at the Smithsonian Institution. See Lincoln Lore Number 843,June 4, 1945. LINCOLN LORE … Scale model of Lincolns invention embodying all of the specifications for construction, except for the application ofsteam power to shaft C to inflate the air chambers. From the Carl W. Schaefer Collection. by letter patent. During my former residence in St.Louis, I had made myself thoroughly…
