ACADIA AMERICAN SAMOA ARCHES BADLANDS BIG BEND BISCAYNE BLACK CANYON OF THE GUNNISON BRYCE CANYON CANYONLANDS CAPITOL REEF CARLSBAD CAVERNS CHANNEL ISLANDS CONGAREE CRATER LAKE CUYAHOGA VALLEY DEATH VALLEY DENALI DRY TORTUGAS EVERGLADES GATES OF THE ARCTIC GLACIER GLACIER BAY GRAND CANYON GRAND TETON GREAT BASIN GREAT SAND DUNES GREAT SMOKY MOUNTAINS GUADALUPE MOUNTAINS HALEAKALA

HAWAII VOLCANOES HOT SPRINGS ISLE ROYALE JOSHUA TREE KATMAI KENAI FJORDS KINGS CANYON KOBUK VALLEY LAKE CLARK LASSEN VOLCANIC MAMMOTH CAVE MESA VERDE MOUNT RAINIER NORTH CASCADES OLYMPIC PETRIFIED FOREST REDWOOD ROCKY MOUNTAIN SAGUARO SEQUOIA SHENANDOAH THEODORE ROOSEVELT VIRGIN ISLANDS VOYAGEURS WIND CAVE WRANGELL-SAINT ELIAS YELLOWSTONE YOSEMITE ZION

Memo to Congress and NPS: Every time you add a park, I have to modify the grid! Fifty-eight is the perfect number, don't you think?

• Instructions
• Puzzle
• Listing
• Solution