Published May 13, 2007

Theodore H. Maiman, 79, a physicist who built the first working laser in the United States and advocated for its use in medical applications, died Sunday at a Vancouver, Canada, hospital from a rare genetic disorder called systemic mastocytosis. Mr. Maiman made his laser discovery in 1960 while working for Hughes Research Laboratories in Malibu, Calif., using a high-power flash lamp and a synthetic ruby crystal. He described his approach as "ridiculously simple, " despite worldwide competition to be the first.


Dwight Wilson, 106, of Toronto, one of the last two Canadian veterans of World War I, died Wednesday. Officials said his death leaves one known surviving Canadian veteran of the war: 106-year-old John Babcock of Spokane, Wash. Born Feb. 26, 1901, in Vienna, Ontario, Mr. Wilson enlisted in 1916 at the age of 15 after telling the army he was older. He was diverted from the front lines after his age was discovered. He managed to re-enlist in 1917 but four months later he was discharged again because of his age. Mr. Wilson was one of more than 600, 000 Canadians who fought in World War I. About 66, 000 died.


Edward F. Boyd, 92, a former Pepsi ad man who broke color barriers with one of the first corporate marketing campaigns to portray blacks in a positive light, died April 30 in Los Angeles. Mr. Boyd was working at the National Urban League in New York in 1947 when what was then the Pepsi-Cola Co. hired him and a team of black sales representatives. As an assistant sales manager, Mr. Boyd created a marketing campaign that showed blacks as respectable, middle class consumers. The promotions differed sharply from the insulting images in many ads at the time.


Eneas Carneiro, 68, a three-time Brazilian presidential candidate who was later elected to the nation's Congress with the largest number of votes ever received by a Brazilian lawmaker, died Sunday of leukemia. Founder of the right-wing Party for Rebuilding the National Order, he talked loudly about law and order and supported the idea that Brazil should develop an atomic bomb. Carneiro first ran for president in 1989, finishing seventh. He ran for president again in 1994, getting 7 percent of the vote and coming in third. In 1998 he finished fourth. He ran for a seat in Congress in 2002 and received nearly 1.6-million votes, outdistancing his closest competitor by more than 1-million votes and becoming the most-voted lawmaker in Brazil's history. He was re-elected to Congress in 2006.