Triadic-line poetry or stepped line is a long line which "unfolds into three descending and indented parts".
 Created by William Carlos Williams, it was his "solution to the problem of modern verse" and later was also taken up by poets Charles Tomlinson and Thom Gunn.
The Faber Book of Twentieth Century Verse: An Anthology of Verse in Britain 1900-1950 was a poetry anthology edited by John Heath-Stubbs and David Wright, and first published in 1953 by Faber and Faber.
 A selection in self-conscious contrast to the "Faber Book of Modern Verse", it did not attempt to cover American poetry (beyond Eliot and Pound).
 It has been through numerous further editions.
 It was last issued as a hardback in St. Clair Shores, Michigan by Somerset Publishers Inc. in 1988 with ISBN  .
Vidyakara (c. 1050–1130) was a Buddhist scholar and poetry anthologist, noted for the Sanskrit poetry compilation Subhashitaratnakosha.
 Some consider it to be the "most celebrated" anthology of Sanskrit verse Most of the verses, where authorship is noted, range over the two centuries prior to compilation, and hence it may be thought of as a compilation of "modern verse" for the period.
Anne Barbara Ridler OBE (née Bradby) (30 July 1912 – 15 October 2001) was a British poet, and Faber and Faber editor, selecting the Faber "A Little Book of Modern Verse" with T. S. Eliot (1941).
 Her "Collected Poems" (Carcanet Press) were published in 1994.
 She turned to libretto work and verse plays; it was later in life that she earned official recognition, receiving an OBE in 2001.
Reflections on a Gift of Watermelon Pickle... and other Modern Verse
Allie Esiri (born 1967), née Allie Byrne, is a British writer and former stage, film, and television actress.
 She created "iF Poems", an educational poetry app, the accompanying hardback anthology "iF: A Treasury of Poems for Almost Every Possibility", and "The Love Book", both an interactive literary app on iOS and Android and a hardback book of best-loved poems, quotations, and letters on the theme of love.
 Esiri's anthology, published by Pan Macmillan on 8 September 2016, "A Poem for Every Night of the Year" won the IBW 2017 (Independent Bookshop Award, best Children's book).
 Esiri's new anthology, "A Poem for Every Day of the Year" was published by Pan Macmillan on 7 September 2017.
The Faber Book of Modern Verse was a poetry anthology, edited in its first edition by Michael Roberts, and published in 1936 by Faber and Faber.
 There was a second edition (1951) edited by Anne Ridler, and a third edition (1965) edited by Donald Hall.
 The selection was of poems in English printed after 1910, which meant that work by Gerard Manley Hopkins could be included.
 A later edition was edited by Peter Porter.
The Oxford Book of Modern Verse 1892–1935 was a poetry anthology edited by W. B. Yeats, and published in 1936 by Oxford University Press.
 A long and interesting introductory essay starts from the proposition that the poets included should be all the 'good' ones (implicitly the field is Anglo-Irish poetry, though notably a few Indian poets are there) active since Tennyson's death.
 In fact the poets chosen by Yeats are notable as an idiosyncratic selection to represent "modern verse".
 The Victorians are much represented, while the war poets from World War I are not.
 The modernist tendency does not predominate, though it is not ignored; Georgian Poetry is covered quite thoroughly, while a Dublin wit like Oliver St. John Gogarty is given much space and praised in the introduction as a great poet.
June Thunder is a 28-line poem by Louis MacNeice.
 It was first published in book form in MacNeice's poetry collection The Earth Compels (1938).
 The poem begins with memories of idyllic summer days in the countryside - "the unenduring / Joys of a season" - before returning to the present and "impending thunder".
 "June Thunder" is written in a loose form of the sapphic stanza, with three lines set in falling rhythm followed by a shorter fourth line.
 The poem was anthologised in "A New Anthology of Modern Verse 1920-1940" (1941), edited by Cecil Day-Lewis and L.A.G. Strong, and "Penguin New Writing" No. 2 (January 1941).
Cecil Day-Lewis (or Day Lewis) (27 April 1904 – 22 May 1972), often writing as C. Day-Lewis, was an Anglo-Irish poet and the Poet Laureate of the United Kingdom from 1968 until his death in 1972.
 He also wrote mystery stories under the pseudonym of Nicholas Blake.
 He was the father of actor Daniel Day-Lewis and documentary filmmaker and television chef Tamasin Day-Lewis.

Question: What is the pseudonym of the poet who edited "A New Anthology of Modern Verse 1920-1940"?
Answer: Nicholas Blake