The Flash and Green Lantern: 1976/1963: The Hounds of Limbo
by Libbylawrence 
The Flash of Earth-One encounters Doctor Alchemy once again, only to discover that his old foe is terrified by another menace! Meanwhile, the Flash of Earth-Two fights a strange alien being who mimics the powers of both the Fiddler and the Icicle! These strange encounters cause the Flashes to seek out help from the Green Lanterns of two worlds! With all clues pointing to the involvement of the Crime Champions, these two sets of heroes risk all to learn the meaning of the Hounds of Limbo!
Secret Origins: The Huntress and the Sportsmaster: The Games People Play
by Martin Maenza, partially adapted from DC Super-Stars #10 by Bob Rozakis and Dick Dillin, and Batman Family #7 by Elliot S! Maggin and Curt Swan 
The history and origin of crime’s infamous couple, the Huntress and the Sportsmaster, is finally revealed! But is there too much water under the bridge for the so-called Mr. and Mrs. Menace to continue their relationship? Dr. Harleen Quinzel is determined to find out! Guest starring Batgirl and Robin, and several other big-name super-heroes and super-villains!
DC Universe: 1984: Seeds
by Libbylawrence 
The combined forces of the Justice League of America, the Justice Society of America, and the Freedom Fighters — heroes from three different Earths — work together to save their worlds from a dangerous force called the Cosmic Tree! But can even the combined forces of the JLA, the JSA, and the Freedom Fighters stop its spread into other dimensions? Enjoy this untold team-up tale of the greatest heroes of Earth-One, Earth-Two, and Earth-X!