Manifold-Writing Tablet. Page: 1 of 4
Reference the current page of this Patent.
Manifold-Writing Tablet., patent, April 1, 1879; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth169824/m1/1/: accessed April 27, 2025), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.