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Start Over Formats Still image ✖Remove constraint Formats: Still image Subjects Smallpox ✖Remove constraint Subjects: Smallpox Subjects Public Health ✖Remove constraint Subjects: Public Health Titles At the Gates: Our Safety Depends on Official Vigilance ✖Remove constraint Titles: At the Gates: Our Safety Depends on Official Vigilance Genre Archival Materials ✖Remove constraint Genre: Archival Materials Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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  • At the Gates: Our Safety Depends on Official Vigilance1