Biafrans. Though refused materials such as books, pens, and paper, he still wrote a significant body of poems and notes criticising the Nigerian government while in prison. Despite his imprisonment, his play The Lion and The Jewel was produced in Accra, Ghana, in September 1967. In November that year, The Trials of Brother Jero and The Strong Breed were produced in the Greenwich Mews Theatre in New York City. Soyinka also published a collection of his poetry, Idanre and Other Poems, which was inspired by his visit to the sanctuary of the Yorùbá deity Ogun, whom he regards as his "companion" deity, kindred spirit, and protector. In 1968, the Negro Ensemble Company in New York produced Kongi's Harvest. While still imprisoned, Soyinka translated from Yoruba a fantastical novel by his compatriot D. O. Fagunwa, entitled The Forest of a Thousand Demons: A Hunter's Saga. Release and literary production In October 1969, when the civil war came to an end, amnesty was proclaimed, and Soyinka and other political prisoners were freed. For the first few months after his release, Soyinka stayed at a friend's farm in southern France, where he sought solitude. He wrote The Bacchae of Euripides (1969), a reworking of the Pentheus myth. He soon published in London a book of poetry, Poems from Prison. At the end of the year, he returned to his office as Chair of Drama at Ibadan. In 1970, he produced the play Kongi's Harvest, while simultaneously adapting it as a film of the same title. In June 1970, he finished another play, called Madmen and Specialists. Together with the group of 15 actors of Ibadan University Theatre Art Company, he went on a trip to the United States, to the Eugene O'Neill Memorial Theatre Center in Waterford, Connecticut, where his latest play premiered. It gave them all experience with theatrical production in another English-speaking country. In 1971, his poetry collection A Shuttle in the Crypt was published. Madmen and Specialists was produced in Ibadan that year. Soyinka travelled to Paris to take the lead role as Patrice Lumumba, the murdered first Prime Minister of the Republic of the Congo, in the production of his Murderous Angels. In April 1971, concerned about the political situation in Nigeria, Soyinka resigned from his duties at the University in Ibadan, and began years of voluntary exile. In July in Paris, excerpts from his well-known play The Dance