Title: The Eagle Has Flown
Content:  The Eagle Has Flown is a book by Jack Higgins, first published in 1991. It is a quasi-sequel to The Eagle Has Landed.
Title: Eagle (Richard Eagle)
Content:  Eagle is a black-and-white indie comic book series which originated in 1986 by artists Neil Vokes and Rich Rankin. Most issues were written by Jack Herman, although some were written by Herman, Vokes and Rankin. It was originally published by its creators as Crystal Comics (Crystal Publications), then by Apple Comics. Initially the Eagle series ran for 23 issues, ending in 1989; the last 7 issues were published by Apple Comics. The series achieved a cult following. It was revived in 2016 by publisher American Mythology Productions and again features art by Vokes and writing by Herman.
Title: Eagle in the Sky
Content:  Eagle in the Sky is a novel by Wilbur Smith, published in 1974. The book sold 600,000 copies in the first six months.
Title: Or Even Eagle Flew
Content:  Or Even Eagle Flew is a novella by Harry Turtledove. It was published on February 9, 2021 in ebook format and in trade paperback two days later. The title of the book is derived from John Gillespie Magee Jr.'s iconic Battle of Britain poem "High Flight".
Title: Eagle (song)
Content:  "Eagle" was written and composed by Benny Andersson and Björn Ulvaeus, who provided its music and its lyrics respectively, as a kind of tribute to a band that the two men admired at the time, The Eagles. The recording, which commenced on 1 June 1977, had the working titles of "High, High" and "The Eagle." Lyricist Ulvaeus was inspired by Richard Bach's 1970 novel Jonathan Livingston Seagull when he wrote the lyrics for this song. In later years, music critics have hailed "Eagle" as one of ABBA's more outstanding tracks in terms of lyrics.
Title: The Eagle Has Landed (novel)
Content:  The Eagle Has Landed is a book by British writer Jack Higgins, set during World War II and first published in 1975. It was quickly adapted into a British film of the same name, directed by John Sturges and released in 1976. It starred Michael Caine, Donald Sutherland, Jenny Agutter, and Robert Duvall.
Title: Eagle (British comics)
Content:  Eagle was founded by John Marcus Harston Morris (1915–1989). Morris was born in the Lancashire town of Preston, and in 1918 moved to Southport. He graduated from Brasenose College, Oxford with a second-class degree in Literae Humaniores, and at Wycliffe Hall gained a second in theology in 1939. He became a priest the following year, and served as a chaplain in the Royal Air Force Volunteer Reserve from 1941 to 1943. In 1945 he became vicar of St. James' Church in Birkdale. Morris had long felt that the Anglican church was not publicising its message effectively enough; four years earlier he had written an unpublished article, intended for the 
Title: Eagle (British comics)
Content:  Eagle was a British children's comics periodical, first published from 1950 to 1969, and then in a relaunched format from 1982 to 1994. It was founded by Marcus Morris, an Anglican vicar from Lancashire. Morris edited a Southport parish magazine called The Anvil, but felt that the church was not communicating its message effectively. Simultaneously disillusioned with contemporary children's literature, he and Anvil artist Frank Hampson created a dummy comic based on Christian values. Morris proposed the idea to several Fleet Street publishers, with little success, until Hulton Press took it on. Following a huge publicity campaign, the first issue of Eagle was released in April 1950. Revolutionary in its presentation and content, it was enormously successful; the first issue sold about 900,000 copies. Featured in colour on 
Title: The Eagle (novel)
Content:  The Eagle is the final novel in the A Dream of Eagles series (published in the United States as the Camulod Chronicles). The Eagle follows the continuing story of Clothar (Lancelot) from when he meets Arthur Pendragon, to, and possibly after, King Arthur's death. It also is noted for having a sympathetic portrait of Mordred. The novel was released on November 19, 2005 in Canada and was released in the United States in 2007.
Title: Eagle (Richard Eagle)
Content:  Eagle chronicled the adventures of detective and vigilante Richard Eagle, a mystic and martial arts adept who wields a sword. Eagle resides in Crystal City on a futuristic Earth, inhabited by humans and non-humans (presumably extraterrestrials).

Question: Who is the author of Eagle?
Answer: Frank Hampson.