A mixture of older ones here: First, a "1st U.S. Edition" hardback of FOTR with interesting pen-and-ink artwork.  If anyone has the rest of these, please send them to me!  Second, a set of 3 from George, Allen & Unwin's first U.S. printing circa 1954-55.  Third, from the same publisher, a 1969 hardcover that is all-in-one LOTR.  This is the first hardcover complete work, in black cloth with rice paper pages to allow the volume to be fairly slim for all three together, a real collector's piece.