This is a drawing of a testing machine.
The materials in this collection are made available courtesy of Rowan Public Library for use in research and private study. Images and text may not be used without prior permission from Rowan Public Library, Edith M. Clark History Room.
Glass Lantern Slide
3-1/4" by 4"
“Kirchin003,” Edith Clark History Room, accessed July 6, 2022, https://edithclark.omeka.net/items/show/81587.