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Taking in the Building Service exhibit at the AFL Union Industries Show, May 29, 1951. The commissioners of the Chicago Park district are from left to right as follows: Jacob M. Arvey;
William L. McFetridge, Vice-President; Joseph W. Cremin; John H. Levin; George T. Donahue, General Superintendent, C.P.D.; and seated James H. Gately, President.