For the first time in 70 years, three of J.D. Salinger’s earliest stories are available to the public — and new illustrations helped make it possible. The recently released collection, “J.D. Salinger: Three Early Stories,” comes from the Devault-Graves Agency, an indie publisher in Memphis, Tenn., that carefully tiptoed around the Salinger estate’s copyright. Before he died in 2010, the famously reclusive author of “Catcher in the Rye” (1951) spent the last decades of his life insisting — sometimes in court — that no one quote from his letters, republish his uncollected work or use his famous characters.