Question: What is the name of this collection of whimsical poems by T.S. Eliot, in which Mungojerrie and Rumpleteazer are fictional characters?
Context: Mungojerrie and Rumpleteazer are fictional characters in T. S. Eliot's book, "Old Possum's Book of Practical Cats", which was adapted into the musical "Cats". Sweeney Agonistes by T.S. Eliot was his first attempt at writing a verse drama although he was unable to complete the piece.  In 1926 and 1927 he separately published two scenes from this attempt and then collected them in 1932 in a small book under the title "Sweeney Agonistes: Fragments of an Aristophanic Melodrama".  The scenes are frequently performed together as a one-act play.  "Sweeney Agonistes" is currently available in print in Eliot's "Collected Poems: 1909–1962" listed under his "Unfinished Poems" with the "Fragments of an Aristophanic Melodrama" part of the play's original title removed.  The scenes are separately titled "Fragment of a Prologue" and "Fragment of an Agon." Rain Song (انشودة المطر “Unshūdat almaṭar”) is a famous 1960 poetry collection and Arabic poem by Badr Shakir al-Sayyab One of the "great poems in modern Arabic poetry", it has been compared to T.S. Eliot's "The Waste Land". The Poetry Book Society (PBS) was founded in 1953 by T. S. Eliot and friends, including Sir Basil Blackwell, "to propagate the art of poetry".  Eric Walter White was secretary from December 1953 until 1971, and was subsequently the society's chairman.  The PBS was chaired by Philip Larkin in the 1980s.  Each quarter the Society selects one newly published collection of poetry as its "Choice" title for its members and makes four "Recommendations" for optional purchase.  The Society also publishes the quarterly poetry journal, the "PBS Bulletin", and until 2016 administered the annual T. S. Eliot Prize for Poetry.  Following the Poetry Society's instigation of its New Generation Poets promotion in 1994, the Poetry Book Society organised two subsequent "Next Generation Poets" promotions in 2004 and 2014.  In 2016 the former Poetry Book Society charity which had managed the book club from 1953 had to be wound up, with its director Chris Holifield appointed as the new director of the T.S. Eliot Prize, and with its book club and company name taken over by book sales agency Inpress Ltd in Newcastle. Mungo Jerry are a British rock group who experienced their greatest success in the early 1970s, with a changing line-up that has always been fronted by Ray Dorset.  The group's name was inspired by the poem "Mungojerrie and Rumpleteazer," from T. S. Eliot's "Old Possum's Book of Practical Cats."  The group's biggest hit was "In the Summertime".  It remains their most successful and most recognisable song.  They had nine charting singles in the UK, including two number ones, and five top 20 hits in South Africa. Charlotte Champe Stearns Eliot (1843–1929), was a school teacher, poet, and social worker.  She was the daughter-in-law of William Greenleaf Eliot, a leading minister in St. Louis, Missouri and a founder of Washington University in St. Louis, Missouri, mother of T.S. Eliot, a famous poet, editor and literary critic, and spouse of Henry Ware Eliot, who ran the Hydraulic Press Brick Company in St. Louis, Missouri. Charles William Eliot (March 20, 1834 – August 22, 1926) was an American academic who was selected as Harvard's president in 1869.  He transformed the provincial college into the preeminent American research university.  Eliot served until 1909, having the longest term as president in the university's history.  He was a cousin of the Nobel Prize-winning poet T.S. Eliot. Hamlet and His Problems is an essay written by T.S. Eliot in 1919 that offers a critical reading of "Hamlet".  The essay first appeared in Eliot's "The Sacred Wood: Essays on Poetry and Criticism" in 1920.  It was later reprinted by Faber & Faber in 1932 in "Selected Essays, 1917-1932".  Eliot's critique gained attention partly due to his claim that "Hamlet" is "most certainly an artistic failure".  Eliot also popularised the concept of the objective correlative—a mechanism used to evoke emotion in an audience—in the essay.  The essay is also an example of Eliot's use of what became known as new criticism. Old Possum's Book of Practical Cats (1939) is a collection of whimsical poems by T. S. Eliot about feline psychology and sociology, published by Faber and Faber.  It is the basis for the musical "Cats". Brian Turner (born 1967) is an American poet, essayist, and professor.  He won the 2005 Beatrice Hawley Award for his debut collection, "Here, Bullet" (Alice James Books) the first of many awards and honors received for this collection of poems about his experience as a soldier in the Iraq War.  His honors since include a Lannan Literary Fellowship and NEA Literature Fellowship in Poetry, and the Amy Lowell Poetry Travelling Scholarship.  His second collection, shortlisted for the 2010 T.S. Eliot Prize is "Phantom Noise" (Alice James Books, USA; Bloodaxe Books, UK, 2010).
Answer: Old Possum's Book of Practical Cats