It was a great challenge to reconstruct Gypsy Rose Lee life, and my interviews with her sister [June Havoc] proved invaluable. It's not often that writers have access to living primary source material; this was the only person who experienced life on the vaudeville circuit with Gypsy during the 1920s, and who saw her perform at Minsky's Burlesque in the 1930s. She knew things that no one else could ever possibly know.

The ideas and practices of Franz Anton Mesmer, an 18th-century Australian healer, had spread to the United States and, by the 1840s, held the country in thrall. Mesmer proposed that everything in the universe, including the human body, was governed by a 'magnetic fluid' that could become imbalanced, causing illness.

I spent three years researching American Rose, research that included connecting with Gypsy's sister, the late actress June Havoc (I was the last person to interview her) and Gypsy's son, and also spending countless hours immersed in Gypsy's expansive archives at the New York Public Library. I became obsessed with figuring out the person behind the persona.

In Gypsy [Rose Lee] the musical, her mother, 'Mama Rose', is portrayed as a slightly eccentric, pushy, ambitious stage mother, but that version doesn't come close to the truth.

Female spies typically represented one of two extremes: the seductress who employed her wiles to manipulate men, and the cross-dresser who blended in by impersonating them.

An amusing city, Chicago, any way you look at it. I'm afraid we are in for the time of our lives.

Gypsy [Rose Lee] wasn't a linear person, and she didn't live life in a linear fashion. She was relentlessly self-inventing, and moved backward as often as she moved forward.