St. Peter's, apse, window, elevation (recto) Unidentified, portal, elevation (verso)early to mid-16th century St. Peter's, drum, exterior, elevation (recto) St. Peter's, tribune, entablature, section and details (verso)early to mid-16th century St Peter's, dome, model, half elevation (recto) blank (verso)early to mid-16th century St Peter's, entablature profile; reflected ceiling details of the cornice, and profiles of column bases and pedestals (recto)St. Peter's, section through drum of model and entablature of upper story (verso)early to mid-16th century
