All material in the Library of Congress is available since their archives are public domain.
It is funny that the sales pitch says Fujifilm archive paper. Reminds me of the time a professional magazine photographer was hired to photograph the CEO of Kodak back in the 1980s. The photographer showed up with Fuji transparency film.
When I CEO saw the film, he was reported to have said "You are a professional, but after this portrait session is over, I do what to talk to you."