Gail Collins loves digging up facts about the history of women. She says she’s now obsessed with Martha Washington who did everything for George. But it was George’s mother who got all the public praise because George and Martha didn’t have children together. Collins talks about many accomplished women in her book “No Stopping Us Now.” I happen to have interviewed some of them in my first job in radio. So you’ll also hear excerpts from those long-ago conversations with Betty Friedan, Nora Ephron, Bella Abzug and Shirley MacLaine in a fun and crowded episode with great characters, both dead and alive.