Sky Island by L. Frank Baum, narrated by Rebecca K. Reynolds and Eric Shanower, After an explanation of how the magic umbrella works, the two children, joined by Cap'n Bill, decide to take a trip to a nearby island; they call it Sky island, because it looks like it's halfway in the sky-but the umbrella takes them to a different place entirely, a literal island in the sky. Audiobook on Compact Disc. Slightly Imperfect.