Berry himself used his collection of recorded interviews to write a PhD and a book on how people learn to become musicians.
One of his interviews was with Arthur Parkman, who ran a rock night at Bristol’s Colston Hall in the early 1960s.
In the recording, Parkman laments the fact he turned down the chance to book a then-unknown band from Liverpool for £100.
The band, called The Beatles, went on to enjoy a successful career in music.
The current collection could take another three years to fully digitise, although Walker said archivists would still welcome approaches from people with historically significant recordings.
“Archives are always interested in what material is out there,” he said.
“I would recommend people approach their local archives in the first instance and speak to them about whether it’s of interest and relevance.”