Reprints Adventure Comics (Vol 1) #247.
"The Legion of Super-Heroes" - - *One day in Smallville, Superboy encounters three youths from the 30th Century. Cosmic Boy, Saturn Girl, and Lightning Boy (Lad), who invite him to join their super-hero club. Taking him to their time, each of three in turn takes him on in a test of super-skill. However, during each test, Superboy is sidetracked by other, more important missions. Consequently, he fails all three tests and is rejected for membership. When he takes his defeat like a good sport, the Legionnaires confess that they had engineered each diversion deliberately and lured the Boy of Steel from victory to see whether or not he could take defeat with a smile. In the end, the heroes from the future cheer him for passing his initiation and admit him into the Legion. *Source: The Official Legion of Super-Heroes Index #1 - Published by ICG.
*One of the cornerstone stories of the DCU is reprinted in this special issue priced at just $1.00 featuring an important "Origins and Omens" backup tale! To celebrate the upcoming Adventure Comics (Vol 3) #1, we're reprinting a Silver Age classic from the title's prior volume - Adventure Comics (Vol 1) #247, the first appearance of the Legion of Super-Heroes! Witness Superboy's first encounter with three super-powered teens from the 30th Century - Cosmic Boy, Lightning Lad and Saturn Girl! Featuring a new cover by Aaron Lopresti that's an homage to the original! *Source: dccomics.com