Massachusetts became the first US state to legalize same-sex marriage.
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The first-ever color photo was taken.
The first televised baseball game was broadcasted on NBC, featuring Princeton defeating Colombia 2-1.
The diaries of Lord Byron were burned by six of the poet's friends.
NASA's SMS-1 satellite launched from Cape Canaveral atop a Delta rocket.
Blurryface, the fourth studio album by Twenty One Pilots, was released.
