A ribbon with “O Ye Fire and Heat” wraps around the top edges of the plaque, referencing the inscription on the Powerhouse, revealed when the ivy was removed during building maintenance. To represent the Gulf War, the upper left features a shield with a map of Iraq, Kuwait, and Saudi Arabia. The upper right shows the symbol for woman with “XX” in the center to commemorate the 20th anniversary of coeducation at SPS. A Cypress tree in the top center represents the performance “Cypress Trees” – produced and directed by members of the Form of 1991 – that reflected the emotional journey of women of color at SPS. The center features the Rectors’ Ruler with Charles Halsey Clark’s initials. The ruler was used to illustrate a talk he gave to the Sixth Form. The bottom features Ohrstrom Library, dedicated with much celebration in April 1991.