- 1492-1892 400th Anniversary - - In Commemoration of the Discovery of America 1492 - - Landing of Columbus Oct. 12th. 1492 - J J Mannion & Company, Cincinnati & Chicago was one of Stevens' agents in America You can click on most images to see larger images or more information. We wish to buy Stevengraphs. One at a time or collections. We also seek photos, brochures or any item of related history. Malcolm J Roebuck, Copyright © 1999-2009 Stevengraphs Bookmarks & Postcards Etc.