This 1926 Ames Shovel, Spade and Scoop catalog makes me realize that
chisels are easy to categorize compared to shovels:
http://stonehill-website.s3.amazonaws.com/files/resources/1926-ames-catalog.pdf

Stonehill College has a vast archive related to the Ames Shovel empire:
http://www.stonehill.edu/offices-services/archives/industrial-
collections/ames-family-collection/who-were-the-ames/">http://www.stonehill.edu
/offices-services/archives/industrial-collections/ames-family-collection/who-
were-the-ames/

I visited a few years ago to read the correspondence of FL Ames, who for a
while tinkered in woodworking tools, perhaps to diversify his portfolio.
He bought the patent for Cook's patented bits which are all the rage again
and owned chisel and auger makers Douglass Mfg. Co. (which became James
Swan Mfg. Co.).

Brian