Vir, qui erat Claudus, quem ponebant quotidie ad portam templi, ut peteret eleemosynam ab introeuntibus in templum.
A man who was lame, whom they laid every day at the gate of the temple, that he might ask alms of them that went into the temple.
Acts 3.2
Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Francis Weninger.
Lives of the Saints by Sabine Baring-Gould.
Anecdotes and Incidents: Ecclesiastical and Religious.
Contemporary Hagiography
Pope Gregory the Great spoke about Saint Servulus in his homily on the Parable of the Sower (Luke 8.4-15). He also wrote about him in his Dialogues.
Art & Architecture
Catalogo generale dei beni culturali
Death of San Servolo by Tommaso Chiari (info here and here)
Guide to Christian Iconography: Images, Symbols, and Texts
Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.
Nihil sub sole novum 
