Indoors, pebbles can be used as bookends and paperweights. The Hubley Manufacturing Company produced a wide range of cast-iron toys, doorstops, and bookends. Simon & Garfunkel also used this technique on their 1968 "Bookends" album. The picture behind him is based on the cover of "Bookends" by Simon & Garfunkel. The package also includes a gold-colored vinyl 7-inch single which bookends the band's career. She bookends the film with her narration. The track bookends "Summer's Cauldron" with a reprise of its "insect chorus". "Bookends" was recorded in fits and starts from 1966 to 1968. It features references to Johnny Carson, "Bookends" and "", among other things. They were high and low frequency bookends to the mainstay, five-band 350 and 500. She and Young split in 1974, and his song "Already One" bookends their relationship. Credits for "Bookends" adapted from AllMusic. Chabon's next non-fiction book, "Bookends&colon; Collected Intros and Outros", was published in January 2019. Reviews of "Bookends" upon its release in 1968 were largely positive.