This week on History Happy Hour: Decades after the end of World War II, the name Ravensbrück, the all-women’s concentration camp, still evokes horror.  Among the prisoners were a tight-knit group of women who had been active in the French Resistance. They banded together not only to survive, but to make sure the story was never forgotten.

We’ll be talking about this with HHH alum Lynne Olson, author of The Sisterhood of Ravensbrück, back for her third time on the show.

Lynne Olson is a New York Times bestselling author of nine books of history, many of which deal in some way with World War II. Titles include Empress of the Nile, Madame Fourcade’s Secret War, Citizens of London, Last Hope Island, and Those Angry Days. She has been a consultant for the National World War II Museum in New Orleans and the United States Holocaust Memorial in Washington D.C.