View of construction worker using concrete grinder to polish second floor of South Wing, Main Library, Detroit Public Library. Library building in background. Printed on front: "Detroit Library Commission. Addns & alterations to Main Public Library. Bryant & Detwiler Company, contr. Descr. grinding uneven 2d floor at w. end of S. Wing. No. 14. Date: 9-8-59. Win Brunner, photo."
