21. Arithmetic for medical technicians Author(s): Letterman General Hospital (San Francisco, Calif.), author. Publication: [San Francisco] : Letterman General Hospital, 1943 Subject(s): Mathematics -- educationDrug Dosage CalculationsMilitary MedicineSan FranciscoUnited States
22. Nursing for medical technicians Author(s): Letterman General Hospital (San Francisco, Calif.), author. Publication: [San Francisco] : Letterman General Hospital, 17 Dec. 1943 Subject(s): Military NursingAllied Health Personnel -- educationMilitary Personnel -- educationSan FranciscoUnited States
23. Operating room technique for surgical technicians Author(s): Letterman General Hospital (San Francisco, Calif.), author. Publication: [San Francisco] : Letterman General Hospital, Sept. 1943 Subject(s): Operating Room Technicians -- educationMilitary MedicineMilitary Personnel -- educationSan FranciscoUnited States
24. A.A. Surgeon Weyer Publication: [between 1907 and 1909] Subject(s): Plague -- prevention & controlHealth PersonnelSan FranciscoUnited States. Public Health and Marine Hospital Service.
25. [Tagged dead rat outstretched on a paper-covered surface, San Francisco, Calif.] Publication: [between 1907 and 1909] Subject(s): Rodent ControlSan Francisco
26. Tagging Morning Catch Publication: [between 1907 and 1909] Subject(s): Plague -- prevention & controlRodent ControlSan FranciscoUnited States. Public Health Service.
27. [A liquid-ammunition car, San Francisco, Calif.] Publication: [1907 or 1908] Subject(s): Communicable Disease ControlPlague -- prevention & controlHorsesRodent ControlSan FranciscoUnited States. Public Health and Marine Hospital Service.
28. [Backyard of a dwelling, San Francisco, Calif.] Publication: [1907 or 1908] Subject(s): San Francisco
29. [Two men dissecting rats nailed to shingles, San Francisco, Calif.] Publication: [between 1907 and 1909] Subject(s): Communicable Disease ControlDissectionLaboratory PersonnelPlague -- prevention & controlSan Francisco
30. [Technician looking through a microscope, San Francisco, Calif.] Publication: 1908 Subject(s): LaboratoriesLaboratory PersonnelSan Francisco
