A very interesting 1941 article on the evolution of the manufacturing of weight plates, dumbbells and barbells. From Milo to The York Barbell Company. Source: Strength & Health (Issue Sep 1941) Page #26 - Strength & Health (Issue Sep 1941) Page #27 - Strength & Health (Issue Sep 1941) Page #28 - Strength & Health (Issue Sep 1941) Page #29 - Strength & Health (Issue Sep 1941) Page #36 - Strength & Health (Issue Sep 1941)