I'll give you the names of the 2 that are sitting on my shelf, altho to be truthfull, I'v only skimmed them in search of specific info I needed at the time.
java.rmi (2001)- by Pitt and McNiff - ISBN 0-201-70043-3
This was the highest recommended when I was looking for RMI books, altho its out of print.
You should be able to find it used on the web. Its a little old, but RMI hasn't changed much AFAIK since it was published. Certainly it will give you a good grounding. Looks to be a good beginner book.
Java RMI (2002)- by Grosso from O'Reilly - ISBN 1-56592-452-5
Its an RMI book. The other one seems te be better put together, but this one would probably be ok if you can't get the other.
HTH
Chris
[ April 01, 2004: Message edited by: Chris Shepherd ]