Late 1800's - early 1900's right angle drive using cams instead of

25 Types of Screwdrivers and How to Use Them - Bob Vila

Water and Power Associates

25 Types of Screwdrivers and How to Use Them - Bob Vila

1907-05-28 St Louis Post-Dispatch MO pg 2

A Blog about Old Barns ~ from Green Mountain Timber Frames

The Brilliant Inventor Who Made Two of History's Biggest Mistakes - The New York Times

Chapter 13.02.02: Robert Henderson and the invention of the smokehouse - Earthworm Express

Self-Guided History Tour of Arlington, Virginia for Bikers and Hikers – Arlington Historical Society

100 Years of Innovation: History of the Electric Drill

A Partial History of Little Chebeague Island 1813-2002 by Membership Manager - Issuu

Textile - Lace Sample, Late 1800s to 1930s

Early 1900s image hi-res stock photography and images - Alamy