Published and copyright 1955 by W.M. Welch Manufacturing Company, 1515 Sedgwick Street, Chicago 10, Illinois, USA

Description: Levers, pulleys, wheels, and gears are all illustrated and labeled on this beautiful vintage school wall chart from the 1950s. Learning has never been easier or more aesthetically pleasing.

Condition: Good, minimal discoloration along border. One of two copies available.

This poster is on paper, but please note that we offer linen-backing for an additional cost. Email us at postermuseum@gmail.com for more details.