Are you at a loss to identify older elongateds?  Then you need Yesterday's Elongateds by Lee Martin and Dottie Dow.  Recently reprinted by The Elongated Collectors, YE (as it's affectionately known) includes almost 300 pages of detailed descriptions and photos of most of the known older elongateds.  It's an indispensable guide for anyone attempting to collect elongateds of the various expositions and world's fairs.  And at only $25 postpaid for TEC members ($40 for non-TEC members), it's a real bargain!  First edition copies of YE rarely come up for sale, and when they do, they fetch hundreds of dollars.  Supplies of the reprint are limited.