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2 (of 21) Oliver E. Williamson after receiving his Prize at the Stockholm Concert Hall, 10 December 2009. Copyright © The Nobel Foundation 2009
Photo: Hans Mehlin

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3 (of 21) Elinor Ostrom and Oliver E. Williamson at the Prize Award Ceremony at the Stockholm Concert Hall, 10 December 2009. Copyright © The Nobel Foundation 2009
Photo: Frida Westholm

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4 (of 21) The 2009 Nobel Laureates stand for the Swedish national anthem (from left to right): Charles K. Kao, Willard S. Boyle, George E. Smith, Venkatraman Ramakrishnan, Thomas A. Steitz, Ada E. Yonath, Elizabeth H. Blackburn, Carol W. Greider, Jack W. Szostak, Herta Müller, Elinor Ostrom and Oliver E. Williamson. Copyright © The Nobel Foundation 2009
Photo: Frida Westholm

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5 (of 21) Oliver E. Williamson in conversation with Princess Madeleine at the Nobel Banquet. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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6 (of 21) Escorted by a student, Oliver E. Williamson walks towards the podium to deliver his banquet speech at the Nobel Banquet in the Stockholm City Hall, 10 December 2009. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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7 (of 21) Oliver E. Williamson delivers his banquet speech at the Nobel Banquet in the Stockholm City Hall, 10 December 2009. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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8 (of 21) Oliver E. Williamson delivering his banquet speech.

© The Nobel Foundation 2009. Photo: Orasisfoto

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9 (of 21) From left to right: Crown Princess Victoria, Mrs Dolores Williamson, Laureate Oliver E. Williamson, Her Majesty Queen Silvia, His Majesty King Carl XVI Gustaf of Sweden, Laureate Elinor Ostrom, Prince Carl Philip, and Princess Madeleine at the Nobel Banquet. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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10 (of 21) The 2009 Nobel Laureates assembled for a group photo during their visit to the Nobel Foundation, 12 December 2009. Back row, left to right: Nobel Laureates in Chemistry Ada E. Yonath and Venkatraman Ramakrishnan, Nobel Laureates in Physiology or Medicine Jack W. Szostak and Carol W. Greider, Nobel Laureate in Chemistry Thomas A. Steitz, Nobel Laureate in Physiology or Medicine Elizabeth H. Blackburn, and Nobel Laureate in Physics George E. Smith. Front row, left to right: Nobel Laureate in Physics Willard S. Boyle, Laureate in Economic Sciences Elinor Ostrom, Nobel Laureate in Literature Herta Müller and Laureate in Economic Sciences, Oliver E. Williamson. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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11 (of 21) Oliver Williamson signing autographs for students after delivering his Prize Lecture at the Aula Magna, Stockholm University, 8 December 2009. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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12 (of 21) Elinor Ostrom and Oliver Williamson after delivering their Prize Lectures at the Aula Magna, Stockholm University, 8 December 2009. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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13 (of 21) Oliver Williamson delivering his Prize Lecture at the Aula Magna, Stockholm University, 8 December 2009. Copyright © The Nobel Foundation 2009
Photo: Orasisfoto

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14 (of 21) Oliver E. Williamson and Elinor Ostrom at their interview with Nobelprize.org in Stockholm, 6 December 2009. Copyright © Nobel Media AB 2009
Photo: Niclas Enberg

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15 (of 21) Oliver Williamson answers a congratulatory call from a colleague after being awarded the 2009 Prize in Economic Sciences.

Photo: Courtesy of Steve McConnell/UC Berkeley

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16 (of 21) Standing in the kitchen of his Berkeley home, Oliver Williamson explains his economic theories just hours after the announcement of the 2009 Prize in Economic Sciences.

Photo: Courtesy of Steve McConnell/UC Berkeley

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17 (of 21) Oliver Williamson at the UC Berkeley press conference following the announcement of the 2009 Prize in Economic Sciences, 12 October, 2009.

Photo: Peg Skorpinski Kindly provided by Peg Skorpinski

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18 (of 21) Oliver Williamson (right) congratulated by George A. Akerlof (left), a UC Berkeley colleague and the 2001 Laureate in Economic Sciences, at the UC Berkeley press conference following the announcement of the 2009 Prize in Economic Sciences, 12 October, 2009.

Photo: Peg Skorpinski Kindly provided by Peg Skorpinski

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19 (of 21) Oliver Williamson (right) is congratulated by young students at a reception at Haas School of Business, UC Berkeley, 12 October, 2009.

Photo: Peg Skorpinski Kindly provided by Peg Skorpinski

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20 (of 21) Oliver Williamson (left) shares a toast with Daniel L. McFadden (left), the 2000 Laureate in Economic Sciences, at a reception at Haas School of Business, UC Berkeley, 12 October, 2009.

Photo: Peg Skorpinski Kindly provided by Peg Skorpinski

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21 (of 21) Portrait of Oliver E. Williamson.

Photo: Jim Block Kindly provided by Jim Block