Close-up view of south tower of the Union Guardian Building. Penobscot Building in background. The Union Guardian building was also known as the Guardian Building and the Union Trust Building. Stamped on back: "Grossman Knowling Lehr. 400 Marquette Bldg., Detroit, Michigan. File number 55." Handwritten on back: "Looking north on Griswold St. from south tower U.T. Bldg."
