The problem is, if you've checked out HARRY's README file, their data management was a mess. If it's like most of the the companies I've been in, there would have been little budget spent on managing that data properly and maintaining it in modern formats.
But I also believe that some people thought that by overwriting the original data with what they honestly thought was corrected data, they were helping things by making sure people didn't go back to it by mistake. On the other hand, I think some intentionally wanted it unavailable.
Historic documents for sale...1p each....120 for a pound...make great wallpaper for the den,...gift wrappings etc....
mostly tables of temperatures, pressure, rainfall etc
Some signed by famous people.....Shackelton...Amundsen...Newton...Captain William Bligh, (H.M.S. Bounty)...and numerous others...