Keen Kutter, E.C. Simmons , St Louis, MO
Keen Kutter was a brand name of tools sold by the E.C. Simmons Hardware Company.
Unknown Date, Munsey's Magazine, Good Natured Tools
January, 1909, Here they Are-- Which Do You Need?
March, 1910,The National Builder Magazine,Special Slim Taper Files
January, 1913, Garden Tools / Cutlery of Known Worth