A West Towns sweeper hard at work in River Forest. The giveaway is by looking at the street light, where the neck of the lamp has an ornate bracket the surrounds the top of the concrete pole (they are still in place on side streets). It could be Lake St or Harlem Ave. If this is Lake, it is probably looking west from Harlem, also seeing what appears to be forest preserve park grounds on north side of street. The number of parked cars tells me this must be the location with the adjacent business district.
Caption data from Edmund G Olson; photo courtesy the Ray Bowlan collection