There are some articles marked as "Artifact destroyed", does it mean that the original document is lost forever? I see there are missing on another website [0]

There are some articles marked as "Artifact destroyed", does it mean that the original document is lost forever? I see there are missing on another website [0] [0] https://avalon.law.yale.edu/ancient/hamframe.asp https://avalon.law.yale.edu/ancient/hamframe.asp