Joseph Braun and Walter Alison Phillips, 1911 Encyclopædia Britannica (1911)
“ The custom of giving the stole to priests and deacons at their ordination is of great antiquity. So far as Spain is concerned there is evidence for it in the decrees of the 4th council of Toledo (633) , and for Rome that of the 8th century Ordo of Mabillon. The present practice — according to which the bishop lays the stole over the left shoulder of the deacon, and crosses it over the breast of the priest — is already found in the pontificals of the 10th century. ”
