I wanted to put all three of these documents together on this blog.
Summorum Pontificum – issued in 2007, and widely seen as freeing the Traditional (Tridentine) Latin Mass. As some who is tracking Latin Masses, I can verify that there is definitely a growth in Traditional Latin Masses after this document was published.
Letter Accompanying Summorum Pontificum – the “explanatory note” for Summorum Pontificum, issued at the same time
Universae Ecclesiae – issued in 2011, instruction on the application of Summorum Pontificum
This is much of a set of book marks for me as anything, as I have been answering some questions recently on these documents.
Letter from Pontifical Commission Ecclesia Dei on altar girls – Altar girls are not permitted in the celebration of the 1962 Missal.
Catholic Herald article – on the PCED letter