Photo caption from published versions of 54-6679_001, 54-6679_002 and 54-6679_004: "STUDY WEATHER - Albert Franz (seated) [54-6679_001] logs atmospheric statistics for Waterloo city engineer E.W. Oke at the Waterloo sewage disposal plant. At right, an outside temperature recorder (top) [54-6679_002] and barometer (below) [54-6679_004] are used to foresee weather conditions which helps in planning the best time to do city work projects."