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Men entering Sweeney Hall, 1953

Men are entering and exiting the Chemical Engineering Building which was renamed Sweeney Hall in 1964.

Dr. George T. Tsao and two graduate students testing the thermal conductivity of starch

A graduate student is operating the Potentiometer Facility in the testing of the thermal conductivity of starch as Dr. Tsao and another student look on.

Dr. George T. Tsao and a graduate student testing moisture absorption of F.T. starch

Dr. Tsao is observing a graduate student testing moisture absorption of F.T. starch.

Early chemical engineering laboratory in basement of Chemistry Building, 1925

A student is working on a double-effect vacuum evaporator.

Draining liquid from a tank,1930

A man is draining liquid from a tank.

Paper Laboratory, 1930

This view shows various pieces of equipment in the Paper Laboratory.

Two drums used in processing agricultural by- products, 1931

These two rotating cylinder drums are operated by pulleys. On each drum is a spigot and each has a rectangular pan underneath. The drum on the left is smaller than the one on the right.

Sperry Separator, 1931

A man is holding the handle of the Sperry Evaporator.

Laboratory glassware, 1931

Three piece of laboratory glassware are labeled 1, 2, 3.

Destructive distillation of wastes by (Cline); Continuous-feed process diagram,1934

This illustration diagrams the destructive distillation of wastes by (Cline) Continuous-Feed Process, Agricultural By-Products Laboratory, Ames, Iowa, September 13, 1934

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