Mary Morris on Traveling as a Woman.

The travel writer has a new book called "Wall to Wall: From Beijing to Berlin by Rail." She took the trip five years ago as reforms were beginning to be implemented in the Soviet Union, and before the government crackdown in Tiananmen Square and the Eastern European revolutions. She's particularly interested in what it's like to travel abroad as a woman alone.

Author Kate Simon. Simon is best known for her travel books (Kate Simon's Paris, New York: Places and Pleasures) and for her two vivid memoirs of coming of age in the New York City of the 1920s and 30s. The first, Bronx Primitive: Portraits in a Childhood, portrays the immigrant neighborhoods just after World War I. In the second, A Wider World: Portraits in an Adolescence, Simon recalls her tumultuous adolescence as she discovered the world beyond the neighborhoods of her youth.

At 98, Carter is the oldest living president in U.S. history. After serving his term, he worked to promote safe housing, human rights and conflict resolution. Originally broadcast in '93, '95 and '96.