Around on the Wabash Street side, the surface detail is brought out in the shadows from the sun. There is a lot of texture going on on this building.
Unlike it black alley counterpart, the fire escape on the Wabash side is also painted white so as to blend in (or at least not stand out). I like this shot because fire escapes are most often painted black, and it is difficult to get good detail when photographing them for lack of light.
A google search for "Hanke Iron & Wire Works" comes up with absolutely nothing. They must have gone out of business long, long ago.