"There are other paintings that haven't been x-rayed, " he told CNN.
He was a keen art collector, and several of his other paintings and sculptures will feature in Christie's New York sales on May 1 and 2.
In one of the caves, the experts found depictions of the atlatl, a pre-Hispanic hunting weapon that had not yet been seen in other paintings in the Tamaulipas state.
The exhibition, officially titled Girl with a Pearl Earring: Dutch Paintings from the Mauritshuis at the de Young also features 34 other paintings by Dutch Golden Age masters, including works by Rembrandt, Peiter Claesz, Jacob van Ruisdael and Frans Hals.
It is larger than the other four paintings and shows the battle from behind the Union lines.
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The other missing paintings were "Tuftonboro" by Frank Stella and "Flower" by Norman Lewis, Mr. Hynes said.
The two other stolen paintings, Degas's Count Lepic and his Daughters (1871) and Cezanne's Boy in a Red Jacket (1888), are still missing.
The other stolen paintings are Monet's Charing Cross Bridge, Gaugin's Femme Devant une Fenetre Ouverte, dite La Fiancee and Meyer de Hann's Autoportrait.
But Andrew Mellon, the U.S. secretary of the Treasury, bought "The Annunciation" with 20 other Hermitage paintings before locking them away in a basement near his Washington home.
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The sheer number of original paintings and other mementos sent in his honor are staggering.
The brown, rough-textured walls of the grand open-air lounge and dining area contain built-in shelves that display sculpture, porcelains, paintings and other art objects.
The joyful portrait contrasts with his other angst-ridden paintings.
Though the conservator who helped to reveal the painting's true identity called it "the rarest thing imaginable, " speculation is rife that there are other Leonardo da Vinci paintings still at large, possibly lying unknown in private collections.
The complex, says Heather, covers 30 acres and houses around 1, 000 artists making paintings, posters and other artwork, including nonideological pottery.
Using paintings and prints by other artists as a starting point, he distorts and elaborates the settings into a singularly original fantasy.
The University received one of the two Warhol paintings, but not the other.
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The trouble is that two of the paintings are worth multiples of the other, and there are four kids.
The gallery used the other walls of this antechamber to offer up paintings by Pablo Picasso, Alberto Giacometti and Claude Monet.
It became memorialized in Norman Rockwell's famous paintings and offered a standard by which other countries would be judged.
Other notable furnishings in the Oval Office are the two paintings that flank the south windows.
They're arranged in domestic settings alongside paintings, sculptures, ceramics, enamels and other artworks by his Pomona Valley contemporaries, including his mentor, the painter Millard Sheets.
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Other highlights of the sales include one of Monet's monumental paintings of the lily pond in his garden at Giverny, which are among the most iconic images in 20th-century art.
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The collections of European paintings and sculpture of Henry Frick, Andrew Mellon and other pioneering tycoons, bought when they became rich, were the foundations of America's great national art galleries in New York and Washington.
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By 1990 the Metropolitan Museum of Art, followed by numerous other museums, had begun to label its frames as well as its paintings.
He's been busy in his post-film life, too, producing colorful paintings that have been shown in the National Museum of London, among other locations.
Other strategic loans to fill occasional historical gaps remind us of the amazing old-master paintings still in private collections.
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Other avid collectors include Barbra Streisand, who was first drawn to the artist's paintings in the 1970s when she was building a house in Art Deco style.
There's a lot of depth and drama in the new displays and, whereas the paintings of the Dutch masters may have had the power to stand alone, in other areas it is often the associated objects that are the most intriguing and emotive.
The MFA and other US museums are carrying out a promise they made in June 1998 to check the histories of paintings acquired during the Holocaust and World War II.
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