Signed and dated, upper register left side panel, on pharmacist's name plate: Diego Rivera Sep. 20, 1932
Inscribed, South wall lower register lower right of center panel (on sheet of paper): These frescoes | painted between July | 25 1932 and March 13 | 1933 while Dr. William | R. Valentiner was direc-| tor of the Art Institute | are the gift to the City | of Detroit of Mr. Edsel | B. Ford, President of the Art Commission.