Federal entomologists, W. E. Peay and H. E. Dorst, discuss with Dr. G. F. Knowlton leaflets on entomology being published by USAC Extension Service, 1950s. Size of photograph: 7.25 x 9.25 in.
Utah State University -- History -- Pictorial works; Entomologists -- Utah -- Logan -- Pictorial works; Knowlton, George F. -- Portraits; Peay, Walter Edwin, 1908- -- Portraits; Dorst, Howard E., 1904- -- Portraits; Utah State Agricultural College...
Ervin Kardos, Entomology student from New York, working with Dr. G. F. Knowlton, research professor of Entomology, on a Utah Agricultural Experiment Station investigation of mites affecting Utah trees and shrubs. Heat of the funnel light is used to...
Utah State University -- History -- Pictorial works; Entomology -- Research -- Utah -- Logan -- Pictorial works; Knowlton, George F. -- Portraits; Kardos, Ervin H. -- Portraits; Utah State Agricultural College -- History -- Pictorial works;...
Takeshi Miura, a student from Japan, studying Entomology, 1950s. Here he looks over one group of injurious forest and shade tree beetles with Dr. G. F. Knowlton, Professor of Entomology. Size of photograph: 8 x 10 in.
Utah State University -- History -- Pictorial works; Entomology -- Utah -- Logan -- Pictorial works; Knowlton, George F. -- Portraits; Miura, Takeshi, 1925- -- Portraits; Utah State Agricultural College -- History -- Pictorial works; Entomologists...
Dr. George F. Knowlton, at the USAC Agricultural Experiment Station, holding up two drawings of pea aphids, a common pest of pea, alfalfa and of certain clovers, 1950s. Aphids spread virus diseases of celery, potatoes, beans, and various other farm...
Utah State University -- History -- Pictorial works; Knowlton, George F. -- Portraits; Entomology -- Utah -- Logan -- Pictorial works; Utah State Agricultural College -- History -- Pictorial works; Entomology -- Research -- Utah -- Logan --...
Entomology professor G. F. Knowlton holding a hive, 1950s. Size of photograph: 5 x 4 in.
Utah State University -- History -- Pictorial works; Knowlton, George Franklin, 1901-1987 -- Portraits; Utah State Agricultural College -- History -- Pictorial works; Entomology -- Study and teaching -- Utah -- Logan -- Pictorial works;...
