Link to the text of Leonardo Bruni's Laudatio Florentinae Urbis or Panegyric to the City of Florence

http://www.york.ac.uk/teaching/history/pjpg/bruni.pdf

Here is the text of Boniface's papal decree (bulla) known as Unam Sanctam, thought to be one of the most extreme statements of papal supremacy.
www.romestudy.org/Unamsanctam.pdf