![]() NPS Photo / Katherine Terry To submit questions regarding museum and library collections, click here. To submit questions regarding archival collections, click here. Gateway Arch National Park Research Center 815 OLIVE ST, STE 20 SAINT LOUIS, MO 63101-1507 Gateway Arch National Park Library (CLOSED TILL FURTHER NOTICE) 11 N 4TH ST SAINT LOUIS, MO 63102-1810 Park Collections to Explore
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Last updated: September 29, 2025