First edition was Alfred Jules Ayer, Language, Truth and Logic (London: Victor Gollancz Ltd, 1936 / New York: Oxford University Press, 1936); Archive.org makes available a 1971 print: A J Ayer, Language, Truth and Logic (London etc: Penguin Books, 1971).
The first edition of "Language, Truth and Logic" by Alfred Jules Ayer was published in 1936 by Victor Gollancz Ltd. in London and Oxford University Press in New York. An archive version from 1971 is available through Archive.org, with Penguin Books publishing a new edition.