Lincoln was able to makethe personal acquaintence of Robbins through Elihu B.Washburne. A few days after Washburne and Lincolnhad called at the home of Mr. and Mrs. Robbins thepatent lawyer asserted that Mr. Lincoln walked intomy office one morning with a model of a western steam-boat under his… … Scale drawing of Lincolns invention showing side view and cross section.The original drawing is now missing from the National Archives file. LINCOLN LORE 3