LOS ANGELES — Billings brings two concurrent auctions focused on 20th-century art, furniture and decor and a special 100-lot art and design book collection to market on Saturday, December 9. The catalogs for both sales are now open for bidding at LiveAuctioneers.

The book sale highlights include what appears to be a mint copy of Ed Ruscha’s 1966 landmark Every Building On The Sunset Strip. The book comes with a plastic wrapper and original presentation box and is estimated at $900-$1,200.

A 1948 Herman Miller catalog is another top lot. Slightly soiled but otherwise appearing complete, The Herman Miller Collection is estimated at $300-$500.

On the furniture side are two fantastic 1970s-era section seating units manufactured in Switzerland by De Sede and designed by Ueli Berger, Elenore Peduzzi Riva, Heinz Ulrich and Klaus Vogt. The first is a 16-section seating unit and four-arm unit system, while the second is an eight-section sofa variant. The larger is estimated at $9,000-$12,000; the smaller is estimated at $3,000-$5,000.

Though it was made in 2006, the Spheroid Chair by William Emmerson owes the inspiration for its design to the late 1960s and early 1970s. The chair was made in a limited run of just 12, and thus carries an estimate of $9,000-$12,000.