1916 Mack AC Bulldog

In the middle of the 4 wheel to 6 wheel era, and close enough to the mule wagons that the rear wheels seem to be straight off a heavy haul cart

Found on https://www.flickr.com/photos/autohistorian/16499881908/

great photo of a Mack plowing streets about a hundred years ago. Look at those back wheels

from the 100 year old photos website, Shorpy.com

Steam shovel and an old Mack

A generation of hard working men with no comforts. No air conditioning, stereo radios, pnuemtic tires (those are solid rubbber) or suspension. Long hard slow lousy days at work, with a hat. Every guy had to wear a hat.

Found on http://anyskin.tumblr.com/

The Blitzen Benz on a Mack hauler

Found on http://aacalibrary.tumblr.com/post/101491590400/the-blitzen-benz-one-of-the-most-famous-early