The trade deadline is almost here, but as you wait for teams to make deals, check out this history of some of baseball's biggest, best and most lopsided in-season trades, including legendary swaps like Lou Brock for Ernie Broglio, Tom Seaver going to the Reds, John Smoltz being dealt for Doyle Alexander and the Cardinals' acquisition of Mark McGwire. For more glimpses into American and world history, visit timeline.com.

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