Joy Adamson to a number of publishers before it was bought by Harvill Press, part of HarperCollins. Published in 1960, it became a bestseller, spending 13 weeks at the top of "The New York Times" Best Seller list and nearly a year on the chart overall. The success of the book was due to both the story of Elsa and the dozens of photographs of her. Readers had pictures of many of the events of Elsa's life leading up to her release. Subsequent books were also heavily illustrated. "Born Free" received largely favorable reviews from critics. Adamson worked closely with publishers to
Mara the Lioness earlier when they had attempted to release her back into the wild. Eventually only Ugas was released into the Meru Game Reserve. It was decided that Mara was too tame and she and the other lionesses should be relocated to Whipsnade Park. Just prior to her departure Mara gave birth to male and female twin cubs, sired by Ugas during the filming of "Born Free". In 1966, Irene Grindlay wrote a book titled "Velvet Paws" which detailed the life of Mara up to and including her appearance in the movie "Born Free". ""We have no reason to reproach ourselves. We