On this day, June 23

1888 Abolitionist Frederick Douglass received one vote from the Kentucky delegation at the Republican convention in Chicago, effectively making him the first Black candidate to have his name placed in nomination for U.S. president. (The nomination went to Benjamin Harrison.)

1954 The Pittsburgh Board of Education approved a $5 million bond issue for a building and renovation program and elected attorney J. Garfield Houston as its new president.

1967 A North Side grocer, William Zeiler, was arrested because FBI agents and Pittsburgh police believed him to be the “Commuter Bandit,” who was responsible for 16 robberies totaling more than $200,000.

1988 James E. Hansen, a climatologist at the Goddard Institute for Space Studies, told a Senate panel global warming of the earth caused by the “greenhouse effect” was a reality.

1995 Dr. Jonas Salk, the medical pioneer who developed the first vaccine to halt the crippling rampage of polio, died in La Jolla, California, at age 80.

1999 University of Pittsburgh graduate John Petersen and his wife, Gertrude, made the largest individual gift ever to the university. The gift was used for the new convocation center, the John M. and

Gertrude E. Petersen Events Center.

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: Singer Diana Trask,

80. Actor Ted Shackelford, 74. Actor Bryan Brown, 73. Supreme Court Justice Clarence Thomas, 72. Actor Jim Metzler, 69. “American Idol” ex-judge Randy Jackson,

64. Actress Frances McDormand, 63. Actor Paul La Greca, 58. Writer-director Joss Whedon, 56. Actress Selma Blair, 48. Singer-songwriter Jason Mraz, 43. Football Hall of Famer LaDainian Tomlinson, 41. Actress Melissa Rauch, 40.