I would suggest two Authors.
Robert Monroe & Bruce Moen.
Robert Monroe started having OBEs around 1958.
He thought he was going 'nuts'. He talked to a couple of good friends of his that were psychiatrists.
Robert Monroe was a Electrical Engineer and owned a company for that purpose.
He started The Monroe Institute later on.
He wrote 3 books.
Journeys Out Of The Body (1971)
Far Journeys (1985)
Ultimate Journey (1994)
Then a man named Bruce Moen had similar experiences and then became a 'student' of Robert Monroe at the Monroe Institute.
He has written 5 books.
Vol.1 Voyages into the Unknown (1997)
Vol.2 Voyage Beyond Doubt (1998)
Vol.3 Charting Unknown Territory (1999)
Voyage to Curiosity's Father (2001)
Afterlife Knowledge Guidebook: A Manual For The Art Of Retrieval And Afterlife Exploration (2005)
Bruce is also an Electrical Engineer.
Both men were skeptics for quite some time.
Bruce Moen was still skeptical even while writting his books.
Very interesting information here.
I have been asking Bill & Kerry to try to interview Bruce Moen for a while now.
My own OBE travels increased after reading these books.....
EDIT: Bruce Moen also has his own website here:
http://www.afterlife-knowledge.com/
Also a Forum within this website here:
http://www.afterlife-knowledge.com/c.../yabb/YaBB.cgi