TechnologyMarch 1, 1913
Keeping Books by Machine
The Punched Card as a Saver of Brain Energy
Stories by H. S. McCormack
The SciencesOctober 12, 1912
Labor-saving Duplicating Machines for the Office
A Review of Methods Old and New
Keeping Books by Machine
The Punched Card as a Saver of Brain Energy
Labor-saving Duplicating Machines for the Office
A Review of Methods Old and New