Boyd, Mark F.2012-01-202012-01-2019202012-01-20http://hdl.handle.net/2152.3/302Two men posing in front of a rat poison warning sign along the Seawall. A large amount of poison was placed under the rocks on the Seawall. It was assumed that the rats were dying under the rocks as not many dead rats were found nearby.3 x 5 in. black-and-white photographimage/jpegen-USBubonic plagueExterminationGalveston Plague LaboratoryHazard signsSeawall (Galveston, Tex)United States Public Health Service