You've included Lake Meade NRA with Grand Canyon. Grand Canyon is entirely in Arizona. Isle Royale is part of Michigan, not Minnesota. Sleeping Bear Dunes & Pictured Rocks aren't National Parks. You're missing Congaree, Great Basin, Indiana Dunes, Cuyahoga Valley, Acadia, and Theodore Roosevelt. City of Rocks/Craters of the Moon in Idaho (whichever it is) isn't a National Park.
Nope, more corrections: Missing Biscayne and Dry Tortugas, and you've included what I believe is Cape Canaveral National Seashore, which isn't a National Park.
Still more: You're missing Saguaro, you have Organ Pipe Cactus (a National Monument), you're missing Guadelupe Mountains and Carlsbad Caverns and Guadalupe Mountains, you've included El Malpais (a Monument), you've included Big South Fork (A national river, I think. not a Park in any case), you're missing Mammoth Cave.
You've included Lake Meade NRA with Grand Canyon. Grand Canyon is entirely in Arizona. Isle Royale is part of Michigan, not Minnesota. Sleeping Bear Dunes & Pictured Rocks aren't National Parks. You're missing Congaree, Great Basin, Indiana Dunes, Cuyahoga Valley, Acadia, and Theodore Roosevelt. City of Rocks/Craters of the Moon in Idaho (whichever it is) isn't a National Park.
I think that's all the mistakes I spotted.