Patent Solicitors and Mechanical Experts, H.B. Willson and Company, LeDroit Building, Washington, Two Hundred Inventions Wanted. To assist inventors in directing their attention to the particular classes of inventions in which improvements are most needed. Includes list of these 200 inventions needed, 1896, BR. 2338, Box: 2, Folder: 11. Regional history broadsides, 6629. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1943745 Accessed September 05, 2026.