Boyd, Mark F.2012-01-202012-01-202012-01-20http://hdl.handle.net/2152.3/307Tagged rats, some still in traps piled in front of trappers. On average a total of 500 to 600 rats were caught daily.4.5 x 6.5 in. black-and-white photographimage/jpegen-USBubonic plagueExterminationRat trappingRats – ControlGalveston Plague LaboratoryUnited States Public Health Service