Across
- 4. The world's first drive-in movie theater, built in 1933 near Camden
- 5. Artificial rain, first used near Concord in 1947 to fight a forest fire
- 9. Mark Twain and some of his characters, such as Tom Sawyer and Huckleberry Finn
- 12. The only royal palace in the U.S. (Iolani)
- 15. The first log cabins in North America, built in 1683 by Swedish immigrants
- 16. ?General Sherman,? a 3,500-year-old tree, and a stand of bristlecone pines 4,000 years old are the world's oldest living things
- 23. The tallest building in the U.S., Sears Tower, in Chicago
- 25. The famous car race: the Indy 500
- 26. The only active diamond mine in the U.S.
- 28. The oldest rock in the world, 3.8 billion years old, found in Minnesota River valley
- 29. The first umbrella factory in the U.S., 1928, Baltimore
- 30. Coca-Cola, first bottled in 1894 in Vicksburg
Down
- 1. The world's largest silver nugget (1,840 pounds) found in 1894 near Aspen
- 2. The largest underground cave in the world: 300 miles long, the Mammoth-Flint Cave system
- 3. The Girl Scouts, founded in Savannah by Juliette Gordon Low in 1912
- 6. The most telescopes in the world, in Tucson
- 7. The most crayfish: 98% of the world's crayfish
- 8. The only roller skating museum in the world, in Lincoln
- 10. Rare fish such as the Devils Hole pup, found only in Devils Hole, and other rare fish from prehistoric lakes; also the driest state
- 11. The most easterly point in the U.S., West Quoddy Head1
- 13. The longest main street in America, 33 miles, in Island Park
- 14. Mexico ?Smokey Bear,? a cub orphaned by fire in 1950, buried in Smokey Bear Historical State Park in 1976
- 17. U.S. spacecraft launchings from Cape Canaveral, formerly Cape Kennedy
- 18. The first World Series, 1903: the Boston
- 19. The first American cookbook, published in Hartford in 1796: American Cookery by Amelia Simmons
- 20. The Cereal Bowl of America, Battle Creek, produces most cereal in the U.S.
- 21. The shortest and steepest railroad in the U.S., Dubuque: 60 incline, 296 feet
- 22. George Washington Carver, who discovered more than 300 uses for peanuts
- 24. The longest coastline in the U.S., 6,640 miles, greater than that of all other states combined
- 27. Grasshopper Glacier, named for the grasshoppers that can still be seen frozen in ice
