"Ghost in the House"
*Powergirl has uncovered a lost manuscript by Lois Lane, but can't quite figure out the code that was used to write it. Once she shows the notebook to Ma Hunkel, Ma informs her that it is written in short-hand and see can translate it and tell the story written inside. The story seems to resolve around an early JSA encounter with the Gentleman Ghost, Jim Craddock! *Source: DocRx8482
Lois Lane, Wonder Woman and Batman are the Earth-2 versions of these characters.