This is a niche we can get behind: so-called literary vinyl, defined by the Times Literary Supplement blog as “spoken word LPs, singles, and those oddly appealing 10-inch discs.” Collector Greg Gatenby is selling off his 1,700-strong collection for $80,000. But for those of us who grew up listening to 78s of A Child’s Christmas in Wales and Bread and Jam for Frances, the memories are, as the credit-card commercials would say, priceless.