Discover Yerkes Observatory, largest refracting telescope - YouTube
Yerkes Observatory – Williams Bay, Wisconsin - Atlas Obscura
The (Almost) Re-Opening of the Yerkes Observatory - Sky & Telescope - Sky & Telescope
1897 Yerkes Telescope 40 inch refractor astronomical observatory University of Chicago Williams Bay, Wisconsin Stock Photo - Alamy
48 Yerkes Observatory Photos and Premium High Res Pictures - Getty Images
Top Things to Do in Wisconsin - Yerkes Observatory
Inside The Yerkes Observatory: U Of C's 'Cathedral Of Science' | WBEZ Chicago
Yerkes Observatory: Restoring the World's Largest Refracting Telescope - Grainger KnowHow
Yerkes Future Foundation has big plans for Yerkes Observatory - Chicago Sun-Times
A Tour of the Famed Yerkes Observatory | Amateur Astronomers Association of Princeton
40 inch refracting telescope, University of Chicago, Yerkes Observatory - UWDC - UW-Madison Libraries
An end of an era at Yerkes Observatory
Yerkes Observatory
Yerkes Observatory - Wikipedia
Yerkes Observatory - Wikipedia
Yerkes-observatorium - Wikipedia
Yerkes Observatory | observatory, Williams Bay, Wisconsin, United States | Britannica
Today's A Big Day': Wisconsin's Yerkes Observatory Has New Ownership | Wisconsin Public Radio
Giant telescopes able to probe deeper into space
Wisconsin 101
Visual Observing With The 40-Inch Yerkes Refractor
Yerkes Observatory
Yerkes Observatory Lives On as the Largest Refractor Telescope Ever Built | Astromart
Williams Bay trying to maintain Yerkes Observatory as education center
