Yerkes Observatory is home to the largest refractive telescope in existence and offers programs throughout the year. Learn more in the Sept. 4 Walworth/Fontana/Williams Bay Times and other SLN publications. (Will Borgen photo)
Yerkes… then and now
Yerkes Observatory is home to the largest refractive telescope in existence and offers programs throughout the year. Learn more in the Sept. 4 Walworth/Fontana/Williams Bay Times and other SLN publications. (Will Borgen photo)