It turns out that the drawing mentioned in the post below was made on the reverse side of notepaper from the Hotel et Restaurant de l'Etoile where Nina was staying. On the side with the hotel's address she has written a list of notable literary and artistic figures of the time - with the intention of inviting them to a dinner or party? Possibly - if this event ever took place, one would certainly have met an interesting group of people. The list is below. I've inserted the full names that I assume are intended, going by friends and acquaintances mentioned in her biography and in Laughing Torso; I'm pretty confident that most of them are correct. ODNB indicated that they appear in the Oxford Dictionary of National Biography.
'Davies' W H Davies (1871-1940), poet and writer, ODNB; NH painted his portrait.
'Strachey' (Giles) Lytton Strachey (1880-1932), biographer and literary reviewer, ODNB, NH drawing of him c1917.
'Sickert' Walter Richard Sickert (1860-1942), painter, ODNB, painted NH and her husband Roald Kristian in 1915-16 (now in the Tate, see here and above).
'Edith S' Dame Edith Louisa Sitwell (1887-1964), poet and biographer, ODNB; sat for NH on at least three occasions.
'Osbert S' Sir (Francis) Osbert Sacheverell Sitwell, fifth baronet (1892-1969), writer, ODNB, portrait by NH c.1918 above.
'Leonard Merrick' (1864-1939), novelist, almost forgotten today, ODNB
'Frank Harris' (crossed out) James Thomas [Frank] Harris (1856?-1931), journalist and rogue, ODNB - see my Decadent London book.
'Clive Bell' (Arthur) Clive Heward Bell (1881-1964). art critic and writer, ODNB
'Goossens' Sir Eugene Aynsley Goossens [?] (1893-1962), composer and conductor, ODNB, and see here. Although mostly based in the USA in the late 1920s, he regularly returned to London for conducting engagements.
'Nancy' Nancy Cunard [?] (1896-1965), poet and political activist, ODNB
'Iris' Iris Tree [?] real name Iris Winifred Reine Daphne Beerbohm-Tree, married name Moffat, Ledebur (1897-1968), poet and actress, ODNB, lived for a time in Fitzroy Square.
'Dorothy' nee Millar, wife of Sir Eugene Goossens, divorced in 1928, friend of NH
Author of Subterranean City, Beneath the Streets of London, London's Coffee Houses, Decadent London, The Folklore of London, Subterranean City (Revised and Expanded Edition), Netherwood, Last Resort of Aleister Crowley, Lord of Strange Deaths, the Fiendish World of Sax Rohmer; Secret Tunnels in England, Folklore and Fact