Smack in the middle of all the political clatter in Washington, D.C., stands a solitary, serene woman in a pale blue satin jacket, reading a letter. She's from the 17th century, and her visit marks an important anniversary for the National Gallery of Art.
She was painted by Dutch Master Johannes Vermeer around 1663. Twenty years ago, in 1995, the National Gallery put on the first Vermeer retrospective ever, featuring 22 of only some 35 Vermeers known to exist. The show was a hit — despite some pretty serious hurdles.