Lost mosaics and frescoes of Rome of the mediaeval period; a publication of drawings contained in the collection of Cassiano dal Pozzo, now in the Royal Library, Windsor Castle (1915)
Morey, Charles Rufus, 1877-1955 · Princeton, N.J., Princeton university press; [etc., etc.] · leaf 72
ere seems to have been from very early times a shrine at this point on the Via Portuensis dedicated to Abbacyrus and his companion, and a tradition that their bodies rested in the underground chamber beneath the lower church. Above the lower church was built, in the thirteenth century, the present… … Fig. 14. Drawing of the lower fresco in the apse of S. Passera. The apse and arch of the upper chapel are decorated with frescoes which are in sad condition, due chiefly to a ruthless overpainting, apparently done toward the end of the seventeenth century, which has transformed the attributes of…
Windsor Castle. Royal Library · Church decoration and ornament · Mosaics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.