1. Newberry Library, VAULT Ayer MS 1275 no. 2 DS ID: DS17666 Title: Report Place: Mexico City Date: 1539 April 27.
2. Newberry Library, VAULT Ayer MS 1275 no. 1 DS ID: DS17667 Title: Letter Author: Juan de Zumárraga Place: Mexico City Date: 1537 Nov.