[Aztlan] Questions regarding Tenochtitlan

[Jorge Pérez de Lara Elías]

To the great aztequistas on the list, I would like to know what the  
best sources are for:

a) the razing of Tenochtitlan;

b) physical descriptions of the Mexica capital as it was when the  
Spaniards entered it. I am especially interested in detailed  
descriptions as to where the main buildings were, what they looked  
like, etc.

Thank you all in advance.

Jorge