Reconstructing the Chestnut Street Theatre has been challenging because of the fragmentary source material which survives the early 19th century. The plan and elevation, drawn by John Nisbet, believed to have been an architect in Philadelphia, and John C. Darley, evidently his apprentice, are our best source of information regarding the elevation of the facade and the plan of the ground floor. See Jonh R. Wolcott, "Philadelphia's Chestnut Street Theatre: A Plan and Elevation," Journal of the Society of Architectural Historians, October 1971. Vol XXX, no. 3. pp. 209 - 218.
The original drawings of the plan and elevation are in the Historical Society of Pennsylvania, in Philadelphia.
That the plan and elevation were probably completed in 1816 is attested by the presence of the gas house and the shed next to the privy which houses the gas generating equipment.