[1] During 1926–27, the church was the target of radical anti-Catholic anarchists, who, in the name of propaganda of the deed, instituted five separate bombing attacks against the building in the space of one year.

[2] On March 6, 1927, officers of the San Francisco Police Department shot and killed one man and seriously wounded another, Celsten Eklund, a radical anarchist and local soapbox orator, as the two men attempted to light the fuse of a large dynamite bomb in front of the church.

[2] In recent years, Saints Peter and Paul has also become the home church for the city's Chinese-American Catholic population, offering weekly masses in Italian, Cantonese, and English.

[7] American pop singer Michelle Lambert considers this church her spiritual home, and even portrayed Mary in “Las Posadas de San Francisco,” parade in 2010.

The protagonist of Wendell Berry's novella Remembering, Andy Catlett, walks by the church and reads the Italian inscription over its portal: the opening lines of Dante's Paradisio.