United States. Bureau of Entomology and Plant Quarantine / United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations / R. C. Roark

CORNELL:31924018375927

Insecticides

Paul Random Henson / R. C. Gaines / Appalachian Forest Experiment Station (Asheville, N.C.) / Arnon Lewis Mehring / D. L. Parker / Ernest John George / Ernest William Laake / George Henry Hepting / George W. Barber / Gustaf Adolph Pearson / Horace Greeley Byers / John Robert Magness / John Robinson Winston / Joseph Everett Alicata / Le Roy August Reynoldson / Leander D. Howell / Lorraine Joseph Markwardt / Martin Trantham Young / Newell Emanuel Good / Paul Wormer Edwards / Philip Carman Wakeley / Raymond Secord Washburn / Stephen Harold Hastings / Walter Ernest Fleming / Elliott Sanford Degman / Emory Clayton Cushing / F. E. Parker / George Eugene Marvin / Harvey Leroy Westover / John Sanderlain Burgess / Luther R. Leinbach / Lyle Thomas Alexander / Raymond Eugene Marsh / Thomas Randall Carson Wilson / Henry Edward Parish / Joe Roudolph Furr / R. S. Holmes

OSU:32435027441146

Agricultural machinery

R. C. Bradt / D. P. H. Hasselman / F. F. Lange

9781461570172 / 1461570174

Technology & Engineering

United States. Bureau of Entomology and Plant Quarantine / United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations / R. C. Roark

CORNELL:31924018375927

Insecticides

Charles Wilbur McCampbell / Francis Siegel Schoenleber / George Adams Dean / George S. Hine / Julius Terrass Willard / Kansas State Live Stock Registry Board / Leland Everette Call / Thomas J. Headlee / Charles Oscar Swanson / John Bernard Parker / R. C. Wiley

UIUC:30112019575031

Cream

George W. Locke / R. C. Hunt

UIUC:30112047607061

Logan County (Ky.)