A wooden bookshelf holds a collection of books, including "The Number 1" by Robert Heinlein, "The Best of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Man Who Sold the Moon" by Robert Heinlein, "The Number 1" by Robert Heinlein, "A Comedy of Justice" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein" by Robert Heinlein, "The Green Hills of Robert Heinlein"