David Lee, e-business manager in 3M's automotive aftermarket division, saw Kathryn's story, and thought he could help, too.

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His assistant in Connecticut, where he is the emeritus chief of the state police, wrote in an e-mail that Lee is out of the country lecturing until June and unreachable for comment.

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Also released were copies of the e-mails between Zimmerman and Lee before the shooting regarding the neighborhood watch program.

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Despite the difficulty finding an O-positive donor, "we try and control the waiting time to be within two to four weeks after arrive to our center, " Lee wrote in October during e-mail exchanges with the Scott family.

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Additionally, details about Zimmerman's MySpace account, surveillance video and e-mails between Zimmerman and ousted Sanford Police Chief Bill Lee were released as part of the evidence handover.

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Back in 2010, Mike Lee, a Republican candidate in Utah, did the same thing, though his list included e-mail addresses and was sent out digitally.

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