I would like to go back to the beginnings of math logic and read selected papers throughout the years connecting the beginnings to today. My first stop was Wikipedia where it claims that math logic basically begins with De Morgan and Boole. I have gotten Boole's "The Mathematical Analysis of Logic" to read. It seems De Morgan's book is either expensive on Amazon or is a scan of an old enough edition that I can't read it.
I have three questions: First, can I ignore De Morgan as a starting place? Second, should I be looking into anyone earlier or contemporary to Boole? Third, though my main is to study the development of mathematical logic, I would also like to learn the philosophical traditions a little bit. Is there anything that would be good to read that maybe isn't quite mathematical in nature?