41. [The two-story empty school building in Hamilton, Montana, which in 1922 became the U.S. Public Health Service Laboratory for research on Rocky Mountain spotted fever] Publication: [c1925] Subject(s): Rocky Mountain Spotted FeverMontanaRocky Mountain Laboratory.United States. Public Health Service.
42. Tagging Morning Catch Publication: [between 1907 and 1909] Subject(s): Plague -- prevention & controlRodent ControlSan FranciscoUnited States. Public Health Service.
43. [Rat-proofing volunteers, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): Communicable Disease ControlRodent ControlPlague -- prevention & controlUnited States. Public Health Service.
44. [Doctor (?) about to receive an injection in his arm from another doctor (?), New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): InjectionsNew OrleansUnited States. Public Health Service.
45. [Rat control group, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): Communicable Disease ControlPlague -- prevention & controlRodent ControlUnited States. Public Health Service.
46. [Men and rat-catching equipment, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): Communicable Disease ControlPlague -- prevention & controlRodent ControlUnited States. Public Health Service.
47. [A fumigation crew, New York, N.Y.] Publication: [194-?] Subject(s): United States. Public Health Service.
48. [Fumigation boat alongside a ship, New York, N.Y.] Publication: [194-?] Subject(s): United States. Public Health Service.
49. [Loading material onto a fumigation truck] Publication: 1951 Subject(s): United States. Public Health Service.
50. [Fumigation, opening HCN discards, New York, N.Y.] Publication: [194-?] Subject(s): United States. Public Health Service.
