Treasure Island

I saw Treasure Island with Wallace Beery the other night. It was so good! Beery was superb; the rest of the cast was merely wonderful. What a story! I've always loved RLS, both as a man and as a writer. I decided my ten-year-old grandson would enjoy reading Treasure Island, so went on Amazon to buy a copy for him. There were so many versions on offer, but some of them were condensed, like Obama's white girlfriends, and it was not apparent which were and which were not. Why do they ruin books like that?