10841. Sanitary engineering: Streets after paving for mosquito control in Colon, Panama Publication: 1911
10844. Sanitary engineering: View of street in Colon, Panama before street paving to prevent mosquito problems
10846. [Water - purification and conditioning]: [Water sterilizing set] Publication: [between 1914-1919] Subject(s): World War I
10847. [Water - purification and conditioning]: [Miraflores Water purification plant sedimentation basin] Publication: [Canal Zone] , 1915
10848. Medical Society of the District of Columbia: Sir Alexander Fleming delivering an address at Medical Society