O'Connor was perhaps best known for his varied and comprehensive short stories but also for his work as a literary critic, essayist, travel writer, translator and biographer.[16] He was also a novelist, poet and dramatist.[17]
O'Connor's career began in 1922 and accelerated with the appearance of poetry in translation, articles on early Irish poets, book reviews by stories and original poetry. Much of this material appeared in Æ's journal Irish Statesman.
From the early 1930s following the publication of his first volume of short stories, Guests of the Nation (1931), to his death in 1966 he was a prolific writer of short stories (c. 160), translations of a wide range of Irish poetry (c. 120), plays, both alone and in collaborations (c.10), novels (2) as well as works in non-fiction covering topics in literary criticism and theory, travel, Irish culture, and biography. His work as an Irish teacher complemented his plethora of translations into English of Irish poetry, including his initially banned translation of Brian Merriman's Cúirt an Mheán Oíche (The Midnight Court). Many of O'Connor's writings were based on his own life experiences – notably his well-known The Man of the House in which he reveals childhood details concerning his early life in County Cork. The Sullivan family in this short story, like his own boyhood family, is lacking a proper father figure.
In other stories, his character Larry Delaney, in particular, is reminiscent of events in O'Connor's own life. O'Connor's experiences in the Irish War of Independence and the Irish Civil War are reflected in The Big Fellow, his biography of Irish revolutionary leader Michael Collins, published in 1937, and one of his best-known short stories, Guests of the Nation (1931), published in various forms during O'Connor's lifetime and included in Frank O'Connor – Collected Stories, published in 1981.
O'Connor's early years are recounted in An Only Child (1961), a memoir which has the immediacy of a precocious diary. U.S. President John F. Kennedy remarked anecdotally from An Only Child at the conclusion of his speech at the dedication of the Aerospace Medical Health Center in San Antonio on 21 November 1963: "Frank O'Connor, the Irish writer, tells in one of his books how, as a boy, he and his friends would make their way across the countryside, and when they came to an orchard wall that seemed too high and too doubtful to try and too difficult to permit their voyage to continue, they took off their hats and tossed them over the wall—and then they had no choice but to follow them. This nation has tossed its cap over the wall of space and we have no choice but to follow it."[18][19]
O'Connor continued his autobiography through his time with the Abbey Theatre in Dublin, which ended in 1939, in his book, My Father's Son, which was published in 1968, posthumously. It contains valuable character sketches of many of the leading Irish literary figures of the 1930s, in particular, Yeats and Russell (who wrote with the pseudonyms Æ and Æon).[20]
