|"Just by looking at the
grey coloring of this machine, it's not too difficult to date it around the WWII era. An advertisement claims
"New square keys add sureness to the touch, wings to the fingers; the machine is
pleasing in contour and color; the over-all appearance is an invitation to get work
Dr. Tim Bergin, Eric Ashman, Seth Gordon, Jeana
Scheirer, Dave Muehling and Andrew Hewitt, "Mechanical Computing."