Excerpted from a new post at the The Notion Club Papers blog...
...There is no direct transcript of an actual Inklings evening, featuring the actual people who attended. The nearest to this are a few, paragraph length, summary entries in Warnie Lewis's diary - a selection from which is published in Brothers and Friends: the diaries of Major Warren Hamilton Lewis edited by Marjorie Lamp Mead (1988).
The best known word-by-word depiction of an Inklings meeting is a chapter in Humphrey Carpenter's group biography The Inklings (1978); which is not an actual meeting, but one that he creatively reconstructed by sampling and synthesizing from multiple writings of the Inklings, together with hints from Warnie's diary. This features the Lewis brothers, JRR Tolkien, Havard and Charles Williams – and these seem to have been the core Inklings of the 1939-45 war years. The only survivor - Havard - endorsed Carpenter’s account as providing the genuine flavour, although probably more intellectually concentrated than a typical real meeting.
JRR Tolkien's The Notion Club Papers (an unfinished and posthumously published novel to be found in Christopher Tolkien's edited The History of Middle Earth, Volume 9, Sauron Defeated, 1992) comprises a highly Inklings-style meeting of a club that was based explicitly upon The Inklings and written to be read at Inklings meeting during 1945-6; but with different, fictionalized and composite participants. This probably captures the spirit of an Inklings meeting more closely than any other source.
CS Lewis also left a short depiction of an Inkling's-esque meeting which can be found in an unfinished fragment of a story named The Dark Tower, and which was posthumously edited and published by Walter Hooper in 1977. The tone of discussion – its mixture of humour and seriousness - is similar to that of the Notion Club.
Owen Barfield was an infrequent, but very keen, Inklings participant - and arguably the Inklings evolutionarily-arose from the Barfield-Jack Lewis conversations and written debates of the 1920s. Barfield published a novel entitled Worlds Apart (1963) which describes a weekend length conversation of a very Inklings-like character - including characters based on Barfield and Jack Lewis...
Read the whole thing here.