If your really interested in the study of left handedness, and right hand bias throughout history, then i recommend the book "Right Hand, Left Hand" by Chris McManus. Its a fascinating read and covers a wide spectrum of topics to do with left and right handedness.
I read it a couple of months ago and i'm no scientist, so its written in a manner which makes it easy to understand if your a mere layman like myself. It deals with all the subjects that have been mentioned on this thread and a whole lot more.
p.s. i'm right handed myself but please dont hold it against me:stylez rasta smoke: