View of worker on scaffold sandblasting facade of Detroit City Hall. Truck and sandblasting equipment parked next to building; "Frank M. Johnson Company, building cleaners, sandblasting, hydro-blasting, waterproofing, tuck pointing, 1275 N. Solvay, VI 1-1334" sign on truck. Handwritten on back: "Sandblast cleaning of building, 1946."
