For the first time in its long history, "
Antiques Roadshow" (Mon., 8 p.m. ET on PBS) took a look back at some items they'd appraised in a previous episode to see how they were faring in today's market. Reaching back fifteen years, they picked the episode that featured the famous letter that coined the phrase, "Yes, Virginia, there is a Santa Claus."The historic artifact was a letter that a little girl wrote to a newspaper, prompting a ...