March 1875 Issue [Article] The first century of the republic. (Fifth paper.) Mechanical progress. (Concluded.) Printing Download PDF Adjust Share by Edward Henry Knight, This article is only available as a PDF to subscribers. Download PDF Tags 19th century Equipment and supplies Photography Printing industry Printing machinery and supplies Type and type-founding United States More from Edward Henry Knight The mariners’ “cautionary signal” The first century of the republic. (Fourth paper.) Mechanical progress.–III The first century of the republic. (Third paper.) Mechanical progress.–II Adjust Share