For years, Field Notes has been looking for a way to celebrate the United States National Parks. Now, in collaboration with the same artists that created "The Fifty-Nine Parks Print Series", three different 3-packs of National Park memo books are here! This pack (Series C) features Rocky Mountain, Great Smoky Mountains, and Yellowstone National Parks. These supremely durable memo books have 100 lb. covers and 60 lb. memo pages. Field Notes writing tools and accessories are proudly made in the USA.