Edward Hopper is well-known in the U.S. for paintings such as Nighthawks (1942)pensive, lonely portraits of people sitting together yet alone. He was less well-known in France, but an exhibit of his work at the Grand Palais has drawn impressive crowds. The Art Institute of Chicago, Friends of American Art Collection/Courtesy of the Art Institute of Chicago hide caption

itoggle caption The Art Institute of Chicago, Friends of American Art Collection/Courtesy of the Art Institute of Chicago

Among his many accomplishments, Ralph Steadman illustrated Hunter S. Thompson's 1971 novel, Fear and Loathing in Las Vegas, about a journalist's reporting trip turned hallucinogenic bender. Courtesy of Itch Film hide caption

itoggle caption Courtesy of Itch Film

One of Kermit Oliver's designs for Hèrmes Jason Sheeler hide caption

itoggle caption Jason Sheeler

There's an empty space today where a Henri Matisse painting had been hanging at the Kunsthal museum in Rotterdam, Netherlands. Seven paintings were stolen Tuesday, including works by Pablo Picasso, Claude Monet and Paul Gauguin. Peter Dejong/AP hide caption

itoggle caption Peter Dejong/AP

Roy Lichtenstein leaves it up to the viewers to decide what has just transpired in his 1964 painting of a tense phone call titled Ohhh ... Alright ... Estate of Roy Lichtenstein hide caption

itoggle caption Estate of Roy Lichtenstein

A closeup from the portrait that a Swiss foundation says is an early "Mona Lisa" by Leonard Da Vinci. Denis Balibouse/Landov hide caption

itoggle caption Denis Balibouse/Landov

The Two-Way

Is This An Early 'Mona Lisa'?

A Swiss foundation claims to have evidence of an earlier version. Skeptics say they need more proof.

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Alfredo Ramos Martinez painted Head of a Nun, tempera on newspaper, in 1934. Gerard Vuilleumier/The Alfredo Ramos Martinez Research Project, Reproduced by Permission hide caption

itoggle caption Gerard Vuilleumier/The Alfredo Ramos Martinez Research Project, Reproduced by Permission

Alfred Hair, Harold Newton, Al Black, James Gibson and Mary Ann Carroll were all part of the original Highwaymen. Photos by Gary Monroe hide caption

itoggle caption Photos by Gary Monroe

Industrial designer Raymond Loewy purchased Pablo Picasso's Seated Woman with Red Hat (or Femme assise au chapeau rouge) in 1957 and gifted it to the Evansville Museum in the '60s. AP/Courtesy Evansville Museum of Arts, History & Science, Michael Wheatley hide caption

itoggle caption AP/Courtesy Evansville Museum of Arts, History & Science, Michael Wheatley

Knitting Is for Pus**** is a work by crochet sculptor Olek. He has created an entire apartment blanketed in brightly colored, crocheted camouflage. Olek/Courtesy Jonathan LeVine Gallery, New York, N.Y. hide caption

itoggle caption Olek/Courtesy Jonathan LeVine Gallery, New York, N.Y.