In the past few days, two rather large donations to rare book repositories were announced.
Autograph Dealer
(516) 922-2192
Rare music- and dance-related material, 15th-21st centuries, including autograph (more)
Book Dealer: Antiquarian & Rare
(917) 992-8343
Signed & Inscribed Editions, First Editions, Collectible Books. Online auctions (more)