BELOIT IRON WORKS 1912 OFFICE BUILDING
The reveres side of this photo has a note indicating this is the original office building and is dated as 1912. The man standing at the rear of the automobile is Alonzo Aldrich. The note further says the building still exists and is surrounded by newer buildings.
This is an enlargement of the windows in the upper right of the above photo. The note on the back of the photo goes on to say that engineering drawings were put out to dry from one of the windows - probably on the iron bracket fastened below the left window.