For anyone who loves history (as I do, and this passion is a lot of what drives my interest in genealogy), there is a really neat resource online that you'll want to bookmark and check out if you haven't discovered it already:
Primary Source Documents Pertaining To Early American History
Despite this title, this resource actually has an amazing collection of online documents ranging from ancient times all the way to 1800; included are many very old documents that have influenced the formation of early America, such as the Maleus Maleficarum, a 15th century book on how to identify and deal with witches, and the Ordinance of William the Conqueror. One of the first links is for American colonists with royal ancestries!
Seriously, it's like Disney World for history and theology geeks.
Thanks to Jon Roland of the Constitution Society for maintaining this site.