"Bedside Medicine" by Dr. G. C. Willis
Complete guide to bedside diagnosis based on history, physical examination and simple laboratory tests (pdf file 530 pages)
Preface of "Bedside Medicine"
"Clinical Laboratory Methods for the Office or Outstation" by Dr. G. C. Willis
Practical textbook of simple bedside laboratory tests (pdf file 118 pages)
Preface of "Clinical Laboratory Methods for the Office or Outstation"