http://www.escapeintolife.com/uncategorized/familiar-spirits/
And here's Richard Fox saying things more cogently than I:
http://www.escapeintolife.com/blog/changing-light/
Finally, here's the man Merrill himself, reading a poem about using the Ouija board for the first time.
(As an aside, did you know that "Ouija" was just the French yes and ther German yes put together, because someone at Milton Bradley thought it made a foreign and mystical-sounding word? it's better, at any rate, than communicating with the spirits on your yes-yes board.)