Photo: James Brotz

Photo: James Brotz

If there's ever been a quintessential work truck in the history of commercial vehicles, it's probably the milk truck. As these trucks from the 1950s show, these milk hauling truck was also a relatively sophisticated vehicle for its time. 

The cutaway vehicles are upfit with a specialized box, which could help keep the cargo cold. 

The trucks were operated by Herman Brotz and the Brotz Bros in Delavan, Wis.

Work Truck eNews will be featuring historic images of fleet trucks on a regular basis. If you have an historic fleet truck image you'd like to share with readers, e-mail it to Lauren Fletcher or Chris Wolski