Exploration; Travel; Central America; Panama; Darien
Box 1: folder 8, Source Material Relating to Richard A. Tewkesbury’s trips to the Darien in 1939 and 1940. Contains Tewkesbury’s unpublished writings which consist of his diary and day by day notes of his second trip through the Darien from...
A female technician in a white lab coat recording the results of an experiment in organic chemistry. She is monitoring an apparatus used to separate natural products from plant material. The instrument consists of large glass tubes, beakers, and...
Four female students in white lab coats conducting an experiment in a chemistry laboratory. Two of the students are at the counter and two are to the rear watching while taking notes.
Teacher and students posed outside a one-room schoolhouse. The children in the front row are dressed in white and are carrying flowers. The tallest woman on the left in the back row is Lucy Pascal, sister of Descartes Pascal. The school is located...
This photograph, taken July 16, 1930, shows E.F. Goss, Associate Professor of Dairy Industries at Iowa State College (University) using the Nafis Acid Test to measure the acidity of the milk, an important part of the process in making cottage...
This January 10, 1905 photograph of dairy students shows the students in a laboratory setting. The students are examining bottled milk and milk from a milk can. Some are holding milk testing equipment, while a burette and glass funnel can be seen...
Iowa State University; Iowa Agriculture and Home Economics Experiment Station; Swine
Two researchers in white lab coats examine an object in a laboratory that also contains a scale, a jar full of stoppered and labeled vials, and a wood and glass piece of equipment. In the inset photo, a man kneels while one baby pig comes to see...
