Three unidentified men inside of the Alvan Clark and Sons Telescope Factory

Evidently the only known surviving photograph showing the interior of the Alvan Clark and Sons telescope factory.  Three men standing alongside the 2-element, 40-inch objective lens in its heavy cell; C.A. Robert Lundin is the man on the left. This is a copy of an original small photograph presented to the Observatory by Ruth Douglass, the daughter of C.A. Robert Lundin., Credit Line: Yerkes Observatory, University of Chicago, courtesy of AIP Emilio Segrè Visual Archives
Abstract/Description: Evidently the only known surviving photograph showing the interior of the Alvan Clark and Sons telescope factory. Three men standing alongside the 2-element, 40-inch objective lens in its heavy cell; C.A. Robert Lundin is the man on the left. This is a copy of an original small photograph presented to the Observatory by Ruth Douglass, the daughter of C.A. Robert Lundin.
Subject(s): Telescopes
Lenses
Observatories
Portraits, Group
Date Created: circa 1895
Credit Line: Yerkes Observatory, University of Chicago, courtesy of AIP Emilio Segrè Visual Archives
Catalog ID: Yerkes Observatory C2