More information on Philip L. Rhodes and his boats may be found in:
Philip L. Rhodes and his yacht designs, by Richard Henderson (ISBN 0-87742-415-2 AACR2) published by International Marine, TAB books, div. of McGraw Hill.
The book contains an appendix with a listing of all of Rhodes designs, starting with his old woodies, through his last fiberglass yachts and boats.
I own a 1962 Rhodes Meridian, and it does have a FULL keel, much like my old Pearson Electra. The boat scores high in seakindliness, since once the boat finds her slot in the water, she maintains a much better motion than newer fin keel boats, which want to swivel about their center of balance. The old CCA boats were designed for cruising comfort, safety and some racing while the later IOR influenced boats tend to be especially spartan below decks, usually are too wide for overall length, and tend towards flatter hull bottoms, with fin keels, sometimes with bulbs to maintain low center of gravity. In the racing community, there has been much concern over the last few years about the safety issues around IOR designs, many of the boats losing masts, keels and capsizing as they try ripping across the oceans at high speeds. While the original Rhodes Meridian and Ranger boats have full keels with traditional keel hung rudders, they do display some fore cutaway, but nothing like boats like the redesigned later Meridian 26 or Hughes 25 from Canada.