This lamp is from the side of the Unity Temple. The Unity Temple is a Universalist Congregation in Oak Park. The Temple was designed by Frank Lloyd Wright, and is constructed with an exterior of cement. You can clearly see the Frank Lloyd Wright style in this lamp.
These building lamps appear on the Franklin Building, in Printers Row in Chicago. The first one appears lower on the building than the second one. They seem to be designed from the Prairie School of architecture.