From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). There are some posters in the audience of the event. One poster has the word "Convert" on it. Another poster on the bottom left corner has the words "No Nukes" on it. The posters are not fully legible as people are covering parts of it. 

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352).