Student work: "Univ of Penna. CL. 'A', III, Esq.-Esq." Rendered image shows letters carved in large monument stone, perhaps the side of a cliff: "Italo | Balbo | 20 planes | 97 men | Rome to | Chicago | July | 1933". A plan & section in pencil are just visible against the black charcoal. Forms part of: Architectural drawings collection of Benjamin, Benjamin Edis and Benjamin S. Linfoot.
Athenaeum copy: Gift of Benjamin S. Linfoot and family,