Possible Clues:

• Record-books?
• Photo groups on Facebook
• Discography entries
• Records a pound, extraordinary sum
• Audiophile's "vinyl"
• Collections of photographs; records
• Books with blank pages to be filled with photographs or stamps, say
• Collections of plastic measurably needing year to melt away
• Musical releases
• '19,' '21' and '25,' for Adele