On this day, May 6

1882 President Chester Alan Arthur signed the Chinese Exclusion Act, which barred Chinese immigrants from the U.S. for 10 years.

1915 Babe Ruth hit his first majorleague home run while playing for the Boston Red Sox.

1937 Andrew W. Mellon dedicated the $10 million Mellon Institute at the start of a five-day program in Carnegie Music Hall, highlighted by an announcement of a new successful treatment for pneumonia developed by institute scientists. Among the scores of leading scientists in attendance were three Nobel Prize winners — H.C. Urey, W.P. Murphy and Irving Langmuir.

1954 Medical student Roger Bannister broke the four-minute mile during a track meet in Oxford, England, in 3:59.4.

1988 Popular Pittsburgh Mayor Richard S. Caliguiri died at 56.

2004 The University Club sold its 81-yearold building in Oakland to the University of Pittsburgh for $3.1 million.

Some items are from Stefan Lorant’s “Pittsburgh: The Story of an American City” (digital.library.pitt.edu/chronology). — Compiled by Alyssa Brown

Today’s Birthdays: Baseball Hall of Famer Willie Mays, 90. Sen. Richard Shelby, RAla., 87. Rock singer Bob Seger, 76. Actor Alan Dale, 74. Actor Ben Masters, 74. Actor Richard Cox, 73. Actor Gregg Henry, 69. Former British Prime Minister Tony Blair, 68. TV personality Tom Bergeron, 66. Actor Roma Downey, 61. Actor Julianne Phillips, 61. Actor-director George Clooney, 60. Actor Clay O’Brien, 60. Actor Leslie Hope, 56. Actor Geneva Carr (TV: “Bull”), 55. Actor Stacey Oristano, 42. Model/TV personality Tiffany Coyne, 39. Actor Adrianne Palicki, 38. Actor Gabourey Sidibe, 38. Actor-comedian Sasheer Zamata, 35. Rapper Meek Mill, 34. Houston Astros infielder Jose Altuve, 31. Actor-singer Naomi Scott, 28. Actor Noah Galvin, 27. Thought for today: “No man chooses evil because it is evil; he only mistakes it for happiness, the good he seeks.”