Um, there are five. RT @WSJ: David Letterman's final "Late Show" brought together all four surviving U.S. presidents: http://on.wsj.com/1Fq4Pab
Replying to @kcostello1232
The Wall Street Journal Retweeted The Wall Street Journal
@kcostello1232 Thanks. We sent a corrected tweet:https://twitter.com/WSJ/status/601401611014041601 …
The Wall Street Journal added,
8:00 AM - 21 May 2015
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