The focus of the story is actually on determining the identity of the four terra cotta portrait heads which appear on the façade of The Second City in Chicago â€" but it documents the history of the heads from their origin on the Schiller theater up to the time they made their appearance on the “greatest comedy club in the world.â€
There is an in-depth research article regarding the history of the Schiller/Garrick theater on the following blog:
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The focus of the story is actually on determining the identity of the four terra cotta portrait heads which appear on the façade of The Second City in Chicago â€" but it documents the history of the heads from their origin on the Schiller theater up to the time they made their appearance on the “greatest comedy club in the world.â€