Comment Decades before punch cards!!! (Score 1) 498
Check out this fellow:
He built on the efforts of two others to scan old player piano rolls and use software to re-constitute the information as MIDI files. If punch cards can be considered files, player piano rolls can too. He has scanned and converted almost 7000 such rolls.
The MIDI files can be printed out as sheet music on paper or backed up to the latest computer format going forward.
I am not sure when the vintage piano rolls were cut (that people have sent him), but player pianos have been around for decades, and a lot of the files on his site are U.S. public domain (before 1922) music. Check it out!