​Site of
​Animal Health Discovery

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Marker No: 4722

Aluminum 18 x 28 Subject Marker 

Geographic: 30.074564, -99.112122

Marker Text: ​In this building (at Menard) during late 1930s, Dr. Edward F. Knipling (b.1909) advanced theory screwworms might be eradicated by releasing sterile male flies to break chain of reproduction and save livestock from role of host to parasitic larvae that destroy livestock and wildlife.
        During 1950-51, this laboratory (removed to Kerrville area) was site of sterilization of male screwworms with irradiation, in procedures by Dr. R.C. Bushland and D.E. Hopkins. The outcome: eradication of the screwworm and saving of domestic and wild animals of the United States. (1972)

Location: ​2700 Fredericksburg Road, Kerrville

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