Yerkes Observatory aims for resurrection as school for astronomy – Chicago Tribune
Yerkes Observatory Lives On as the Largest Refractor Telescope Ever Built | Astromart
Discover Yerkes Observatory, largest refracting telescope - YouTube
Giant telescopes able to probe deeper into space
Top Things to Do in Wisconsin - Yerkes Observatory
40 inch refracting telescope at Yerkes Observatory in Williams Bay, Wisconsin Stock Photo - Alamy
Today's A Big Day': Wisconsin's Yerkes Observatory Has New Ownership | Wisconsin Public Radio
Legacy - Yerkes Observatory
Wisconsin's Yerkes Observatory—stargazing through the world's largest refracting telescope
Yerkes Observatory – Williams Bay, Wisconsin - Atlas Obscura
Yerkes Observatory: Restoring the World's Largest Refracting Telescope - Grainger KnowHow
Yerkes Observatory - Wikipedia
40 inch refracting telescope, University of Chicago, Yerkes Observatory - UWDC - UW-Madison Libraries
The (Almost) Re-Opening of the Yerkes Observatory - Sky & Telescope - Sky & Telescope
Wisconsin 101: Yerkes Telescope And The Birthplace Of Astrophysics - Wisconsin Life
Inside The Yerkes Observatory: U Of C's 'Cathedral Of Science' | WBEZ Chicago
Yerkes Observatory
Yerkes Observatory: Restoring the World's Largest Refracting Telescope - Grainger KnowHow
The (Almost) Re-Opening of the Yerkes Observatory - Sky & Telescope - Sky & Telescope
Visual Observing With The 40-Inch Yerkes Refractor
