Shepherds for Science, by W. C. Tuttle                                 67139
  [author: W. C. Tuttle]
  [Link: [1]https://www.gutenberg.org/6/7/1/3/67139]
  [Files: 67139-0.txt; 67139-h.htm]

Thanks to Roger Frank and Sue Clark

References

   1. https://www.gutenberg.org/6/7/1/3/67139