title: Bitterroot enigma: Howard Taylor Ricketts and the early struggle against spotted fever.
authors.forename: P C
authors.initials: PC
authors.lastname: Mullen
mesh_terms: D049711:History, Modern 1601-; D012373:Rocky Mountain Spotted Fever / Q000266:history*; D014438:Typhus, Epidemic Louse-Borne / Q000266:history*; D014481:United States