Hole punch history: How the world became more organised in a single thadumph, The Independent

There is dispute as to where the first patents were filed

The History of Punch by M. H. Spielmann

Hole punch - Wikipedia

History of America in hole-punched photos, History

Hole Punch History: The Brilliantly Simple Mechanism Is the Best Example of Office Physics

TUL Custom Note-Taking System Discbound Hole Punch, Silver : Arts, Crafts & Sewing

A brief history of hole puncher.docx - A brief history of Hole Puncher Introduction The history of the hole puncher is fairly unknown or at least its

Paper Punch - The History of the Paper Punch

File:Illustration from Punch By HM Brock (1875-1960) by courtesy of Wellcome Collection - Quack.jpg - Wikipedia

Modifi ed single-hole punch to collect pooled leaf samples as described

Celebrate 131st Anniversary of Hole Puncher- An Invention That's Now Basic Office Utility