New Advent
Catholic Encyclopedia: The Books of Machabees
Discusses the contents, authorship, and sources of 1 Maccabees. Please note that ?The Catholic Encyclopedia? is a historic reference source and should be viewed in the context of resource material dated around 1910.
Luther Seminary
Bible Tutor: 1 Maccabees
This site from The Bible Tutor briefly discusses the contents of 1 Maccabees. The information is very short but factual and is worth checking out for a background on the subject.