Christie's will present a sale of photographs by Irving Penn (1917-2009) - the largest to ever come to auction.
The 67 photographs in the Collection were gifts from Irving Penn to Patricia McCabe, his trusted personal assistant for over 30 years.
Highlights from the collection will include Cuzco Children, 1948, estimated at $100,000-150,000, and Poppy: Glowing Embers New York, 1968, estimated at $70,000-90,000.
Two Guedras, Morocco, 1971, estimated at $40,000-60,000 will also appear on the auction block before collectors and investors at the Rockefeller Plaza, New York.
Presale viewings for prospective buyers will be held on April 9-14, while the sale itself will take place on April 14.
If you can't make the Christie's sale, elsewhere a signed copy of one of the greatest photography books ever released is also for sale on the collectors' market.
Today, Yousuf Karsh, the Canadian-Armenian photographer, is recognised as the one the greatest portrait photographers of all time.
A signed copy of Karsh a Fifty-Year Retrospective, autographed by the artist himself, is currently held up Paul Fraser Collectibles and up for sale priced £595 ($980).