Question: What skill do Philip Larkin and John O'Hara both possess?

Context articles: Selected Letters of Philip Larkin, 1940–1985
Philip Larkin
Collected Poems (Larkin)
The Whitsun Weddings (poem)
Relationships that influenced Philip Larkin
John O'Hara
Larkin 25
Jill (novel)
The Less Deceived
Larkin at Sixty

The Selected Letters of Philip Larkin, 1940–1985 is a volume of Philip Larkin's personal correspondence, compiled by Anthony Thwaite, one of Larkin's literary executors, and published in 1992 by Faber and Faber, seven years after Larkin's death.
 It was followed a year later by "Philip Larkin: A Writer's Life", Larkin's official biography, written by Andrew Motion, Larkin's other literary executor.
Philip Arthur Larkin (9 August 1922 – 2 December 1985) was an English poet, novelist and librarian.
 His first book of poetry, "The North Ship", was published in 1945, followed by two novels, "Jill" (1946) and "A Girl in Winter" (1947), and he came to prominence in 1955 with the publication of his second collection of poems, "The Less Deceived", followed by "The Whitsun Weddings" (1964) and "High Windows" (1974).
 He contributed to "The Daily Telegraph" as its jazz critic from 1961 to 1971, articles gathered in "All What Jazz: A Record Diary 1961–71" (1985), and he edited "The Oxford Book of Twentieth Century English Verse" (1973).
 His many honours include the Queen's Gold Medal for Poetry.
 He was offered, but declined, the position of Poet Laureate in 1984, following the death of Sir John Betjeman.
Collected Poems is the title of a posthumous collection of Philip Larkin's poetry edited by Anthony Thwaite and published by Faber and Faber.
 He released two notably different editions in 1988 and 2003, the first of which also includes previously unpublished work.
 Both editions contain the contents of Larkin's collections "The North Ship", "The Less Deceived", "The Whitsun Weddings" and "High Windows", plus other material.
"The Whitsun Weddings", read here by Larkin himself, is one of the best known poems by British poet Philip Larkin.
 It was written and rewritten and finally published in the 1964 collection of poems, also called The Whitsun Weddings.
 It is one of three poems that Larkin wrote about train journeys.
Throughout the life of the poet Philip Larkin a number of women had important roles which were notable influences on his poetry.
 Since Larkin's death biographers have highlighted the importance of female relationships on Larkin: when Andrew Motion's biography was serialised in the Independent in 1993, the second instalment of extracts was dedicated to the topic.
 In 1999 Ben Brown's play "Larkin with Women" dramatised Larkin's relationships with three of his lovers, and more recently writers such as Martin Amis have continued to comment on this subject.
John Henry O'Hara (January 31, 1905 – April 11, 1970) was an American writer, best remembered as a keen observer of social status and manners in early to mid 20th century America and pre-eminent among his contemporaries at depicting social realism.
 He first earned a reputation for short stories and later became a best-selling novelist before the age of 30 with "Appointment in Samarra" and "BUtterfield 8".
Larkin 25 was an arts festival and cultural event in Kingston upon Hull, England, organised to mark the 25th anniversary of the death of the poet and University of Hull librarian, Philip Larkin.
 The festival was launched at Hull Truck Theatre on 14 June 2010 and concluded on 2 December 2010, the twenty-fifth anniversary of the poet's death, with the unveiling of a statue in his likeness at Hull Paragon Interchange.
Jill is a novel by English writer Philip Larkin, first published in 1946 by The Fortune Press, and reprinted by Faber and Faber (London) in 1964.
 It was written between 1943 and 1944, when Larkin was twenty-one years old and an undergraduate at St John's College, Oxford.
The Less Deceived, first published in 1955, was Philip Larkin's first mature collection of poetry, having been preceded by the derivative "North Ship" (1945) from The Fortune Press and a privately printed collection, a small pamphlet titled "XX Poems", which Larkin mailed to literary critics and authors.
 Unfortunately, Larkin was unaware that postal rates had gone up, and most recipients, when asked to pay the difference for delivery of a pamphlet by a little-known writer, turned them away, only around 100 copies were printed.
Larkin at Sixty (1982) is a collection of original essays and poems published to celebrate the sixtieth birthday of the English poet Philip Larkin.
 It was edited and introduced by Anthony Thwaite and published by Larkin's publishers, Faber and Faber.
 A poetic dramatisation of the launch of the book was written by Russell Davies.