[114] Beard/Pryor, January 23, 1979.
[115] Derr Report, 1932, 11.
[116] Ibid., 1926, 8.
[117] Ibid., 1925, 6.
[118] Beard/Netherton/Reid, November, 1974.
[119] Ibid.
[120] Derr Report, 1930, 29.
[121] Ibid., 1936, 16; and notes following interview, Beard/Harrison/Pryor, March 6, 1979.
[122] "Farm Notes" and "Scientific Feeding," January 22, 1925; and "Rid Houses and Hens of Vermin," October 21, 1926; all in Herndon News-Observer.
[123] Ibid., April 14, 1932.