https://nonprofitlocator.org/organizations/or/sumpter/510434444-cracker-creek-museum-of-mining-incorporated https://nonprofitlocator.org/organizations/or/sumpter/930825813-sumpter-valley-snowmobilers https://nonprofitlocator.org/organizations/or/sumpter/931289344-sumpter-valley-museum-association-incorporated https://nonprofitlocator.org/organizations/or/sumpter/943182947-friends-of-the-sumpter-valley-dredge-incorporated