View of two construction workers assembling pipe on first floor of South Wing, Main Library, Detroit Public Library. Ladders, wheelbarrow and sections of pipe in room. Printed on front: "Detroit Library Commission. Addns & alterations to Main Public Library. Bryant & Detwiler Company, contr. Descr. So. Wing, lkg. no., 1st floor. No. 25. Date: 3-7-61. Win Brunner, photo."