What book does Mr. Lemoncello give Kyle's team and what do the different copies look like?

Mr. Lemoncello gives the team seven different versions of "The Complete Sherlock Holmes." One was a leather-bound limited edition; another was a tattered paperback; three with hardcovers with different illustrations on their fronts; one was a bigger kind of paperback with lots of scholarly essays; and the seventh was an e-reader with only one title loaded on it.