Sifting Through Love Letters Of The Past

As Valentine's Day approaches, we read through love missives from history, including those between medieval lovers Heloise and Abelard, President Woodrow Wilson and Edith Galt, and playwright Anton Chekov and actress Olga Knipper.

Thomas Mallon, the author of "Yours Ever: People and Their Letters," takes us through the letters.  Our conversation originally aired last year.