Ed Piskor, "Hip-Hop Family Tree 2, 1981-1983" (Fantagraphics, $27.99). The second oversized volume of cartoonist Piskor's cultural history is just as wondrous as the first, bringing to life a colorful cast of characters that include Doug E. Fresh, LL Cool J, and Run-D.M.C., and turning the early innovators of rap into real-life comic-book superheroes.