SOTHEBY'S BOB DYLAN AUCTIONS:

Sotheby's Auction 1989 Bob Dylan COLLECTOR'S CAROUSEL, June 24th 1989: almost 600 items up with photos (Beatles, Elvis, Dylan...)

Sotheby's Auction 2014 Bob Dylan A ROCK & ROLL HISTORY: PRESLEY TO PUNK, 24 June 2014, details here