No aspect of Disneyland better expresses the postwar optimism of the 50's than Tomorrowland, which once offered Jetsons-like novelties like Monsanto's House of the Future and Flying Saucers (bumper-car disks, pictured).

Between the Covers Rare Books in Merchantville, N.J., also offers strikingly original catalogs and novelties.

The visitors were offered such novelties as continuous reading room service by library staff members, a reference desk, printed catalogues and guide books, lists of new acquisitions, and longer hours of service in the reading room (10 a.m. to 9 p.m).

There were Rugs concerts, which offered new music and other novelties; Cushion concerts of Baroque and Classical works, for which the seats at Avery Fisher Hall were removed and replaced with cushions, and Promenade concerts, for which concertgoers sat at tables and drank champagne.

They also offer such novelties as a shower-bath dress (with the jet of water depicted in beads) and a white calfskin "body coat," with the outline of a body stenciled on it in pink and a patch of mink doing duty as pubic hair.

Past seasons have offered even fewer novelties.

They offer ice cream, frozen novelties, and ice cream cakes on a seasonal basis.

Like the season, the albums offer comfort and glitz, raw commercial ambition and good intentions, novelties and would-be traditions.