Excerpt - page 37: "... life is more often humane killing rather than euthanasia. In zoos and wildlife environments, consideration for factors such as degree of control over ..."
Excerpt - page 12: "... Albright believed that the NPS had a "duty to present wildlife as a spectacle" for public enjoyment; upon its opening in June 1924, Albright explained that the zoo was needed so that tourists could closely inspect and photograph ..."