At the moment I've posted Mackey's Landmarks and Pound's analysis of them. I the future I will post Landmarks that differ substantially from Mackey's and possibly compare and contrast them myself.

Mackey's Landmarks - These landmarks are important, because they are the first time (to my knowledge) that someone tried to conclusively list the landmarks. The subsequent discussion and research that this generated is the true importance of these landmarks.

Masonic Jurisprudence - This is just chapter 2 of Masonic Jurisprudence by Roscoe Pound. It discusses landmarks in general and Mackey's in particular. I highly recommend reading the entire book, which can be found in Little Masonic Library.