Witch's Broom Disease on Cacao Trees, Peru
circa 1963 to 1966

Woman examining sweet potato products
circa 1962 to 1968

Woman posing with pesticide warning display, circa September 1968

Woman with calf
circa 1960 to 1969

Women Plant Pathology SPA Employees group photo, 1964

Worker Harvesting Tea Leaves, Peru
circa 1963 to 1966

Worker on tractor with agricultural machinery in field
March 1967

Worker with agricultural machinery
February 1967

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working on College Farm
April 6, 1961

Working Oxen
September 1966

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young chickens
February 24, 1961

Young North Carolina farm boy sitting on the ground under a tobacco plant.
1964

Zebu Cow, Peru
circa 1963 to 1966

Zinc Deficiency, Orange Plant, Peru
circa 1963 to 1966