Congressional Library: Looking N.W. From South Vault by Levin C Hardy https://www.rawpixel.com/image/14271658/congressional-library-looking-nw-from-south-vault-levin-hardyFree Image from public domain licenseHistory Mantle, House Reading Room, U.S. Congressional Library by Levin C Hardy https://www.rawpixel.com/image/14271707/history-mantle-house-reading-room-us-congressional-library-levin-hardyFree Image from public domain licenseCongressional Library: View Looking North Through Grand Stair Hall from South Corridor by Levin C Hardy https://www.rawpixel.com/image/14273626/photo-image-person-church-public-domainFree Image from public domain license