Religious History Bleg

One of my goals over this baby-cation is to revise and post at least rough reading lists for years 3 and 4 of the High School Humanities Program. I'm working off the three versions that each of us kids in my family used (Dad would revise the reading list each time, trying to fit everything in) and trying to trim to down to a reasonable length and deal with the occasional blind spots and ommissions.

One of the main areas where I'd like to add or change selections is in Year 3, which is supposed to cover from Muhammad to the Protestant Reformation. We tried various attempts at covering the rise of Islam, from the basic (reading the Catholic Encyclopedia and Britanica articles on Islam and Muhammad) to actual primary source (reading the first three books of the Koran: Al-Baqarah, Al-Imran and Al-Nisa). I'm not really sure what the right approach is here, especially as Islam is much more talked about now than it was in the mid 90s, and so a student is likely to be coming to the program with a certain amount of perception already in place. I've got 1-2 weeks of a bright high schoolers history/literature reading time available -- perhaps 100-200 pages depending on the difficulty of a source. What suggestions do people have as to the best intro to Islam and/or Muhammad? I've got separate selections for covering the Crusades, etc. Here we're pretty much looking for Islam in the 700-800 range and introducing it as a religion. Reading level is bright high schooler/entry level college.

The second area I want to add some texts is at the opposite end of that year. Somehow, we never covered any Reformation texts. This is probably for roughly the same reason we didn't actually include the Bible in the list back in the first two years -- we assumed that we knew a bit about that. But I'm thinking that it's a good idea to have something here. One can, of course, read the 95 Theses, and that's probably a good idea. They're short, after all. But it seems to me that we need some better examples of the thought of the early Protestants. Any suggestions on good selections from Luther, Calvin or other early Protestants which would provide a good feel for early Protestantism? (Pilgrim's Progress and Paradise Lost to be covered later.)