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…Virgin Mary, which, according to tradition, was built in the same place by Emperor Constantine the Great and solemnly consecrated by Pope St. Sylvester I—these have been diligently investigated, described, and illustrated with various antiquarian monuments. Furthermore, they are now brought forth from the dense darkness in which they have remained hidden…
https://www.wichita.edu/academics/fairmount_las/geology/wparcell/Kircher/HistoriaEustachio/historia1.php