The Library of Congress is working to preserve televised images from another era. From Walter Cronkite to "I Love Lucy," the operation is digitizing more than 500 old tapes a week. Jan Crawford ... more 
The Library of Congress is working to preserve televised images from another era. From Walter Cronkite to "I Love Lucy," the operation is digitizing more than 500 old tapes a week. Jan Crawford reports. less 
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Tue, Jul 30, 2013 8:02 PM EDT