Background: Dame Jane Morris Goodall  (; born Valerie Jane Morris-Goodall, 3 April 1934), formerly Baroness Jane van Lawick-Goodall, is a British primatologist and anthropologist.
Context: Goodall had always been passionate about animals and Africa, which brought her to the farm of a friend in the Kenya highlands in 1957. From there, she obtained work as a secretary, and acting on her friend's advice, she telephoned Louis Leakey, the notable Kenyan archaeologist and palaeontologist, with no other thought than to make an appointment to discuss animals. Leakey, believing that the study of existing great apes could provide indications of the behaviour of early hominids, was looking for a chimpanzee researcher, though he kept the idea to himself. Instead, he proposed that Goodall work for him as a secretary. After obtaining approval from his wife Mary Leakey, Louis sent Goodall to Olduvai Gorge in Tanzania, where he laid out his plans.  In 1958, Leakey sent Goodall to London to study primate behaviour with Osman Hill and primate anatomy with John Napier. Leakey raised funds, and on 14 July 1960, Goodall went to Gombe Stream National Park, becoming the first of what would come to be called The Trimates. She was accompanied by her mother, whose presence was necessary to satisfy the requirements of David Anstey, chief warden, who was concerned for their safety; Tanzania was "Tanganyika" at that time and a British protectorate.  Leakey arranged funding and in 1962, he sent Goodall, who had no degree, to Cambridge University. She went to Newnham College, and obtained a PhD degree in ethology. She became the eighth person to be allowed to study for a PhD there without first having obtained a BA or BSc. Her thesis was completed in 1965 under the tutorship of Robert Hinde, titled Behaviour of free-living chimpanzees, detailing her first five years of study at the Gombe Reserve.
Question: When did Goodall first go to Africa?

Answer:
1957.