Clyde Tombaugh
Date: 1938
Clyde Tombaugh, 1906-1997, examining planet photograph plates under the Blink Microscope Comparator at the Lowell Observatory.

Geographical center of the United States marker, Smith County, Lebanon, Kansas
Date: 1940s or 1950s
This is a view of a marker at Lebanon, Kansas, representing the geographical center of the United States. It was sponsored by the Lebanon Hub Club, April 23, 1940.

Pharmacy School prescription compounding room, University of Kansas, Lawrence, Kansas
Date: Between 1910 and 1919
This photograph shows the prescription compounding room in the School of Pharmacy at the University of Kansas, located in Lawrence. An older man who appears to be an instructor is visible towards the right side of the picture, and two younger men who appear to be students are visible towards the center and left side of the picture. The glass case visible in the right foreground contains a variety of pharmacy tools and containers. The shelves in the background are filled with bottles of chemicals and pharmacy supplies. The man near the center of the picture is using a mortar and pestle to mix a prescription.

School of Pharmacy drug laboratory, University of Kansas, Lawrence, Kansas
Date: 1913
This photograph shows a view of the School of Pharmacy drug laboratory at the University of Kansas in Lawrence. Three men are visible in the picture working with laboratory equipment. A laboratory table filled with scientific tools and equipment is visible, and the shelves behind the table are filled with bottles of chemicals.