More true than you think
and the records were on floppy disks that the modern computers couldn't read
I saw a news report several years ago about a GAO report slamming NASA. According to the report, data from many of NASA's early space missions were archived on degrading magnetic tape. Not only did NASA not have any tape machines that could read the tapes, they'd lost the telemetry schema needed to convert the bits of data into useable information.