• World War II Slows Screwworm Research
  • Report by Bureau of Entomology and Plant Quarantine, United States...
• Screwworm Research Continues During World War II
  • Survey with map. 1944. "Screw-worm Survey - 1944." Southeastern Eradication...
• Screwworms Spread to the Northern Plains
  • Memorandum from Raymond C. Bushland to E. W. Laake. 1949...
• Smear 62
  • Report by Bureau of Entomology and Plant Quarantine, United States...
• A Method to Sterilize Masses of Screwworms
  • Photograph "Edward F. Knipling, In Charge, Orlando, Fla., Field Station,...
  • Letter draft from Edward F. Knipling to Emory Cushing. 1946...
• Sterilization of Screwworms by Radiation?
  • Letter copy from Edward F. Knipling to H. J. Muller....
  • Letter from H. J. Muller to Edward F. Knipling. 1950...
• Bushland Shows Radiation Works

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