By Gas Mask and Fire Hydrant

From Author Wars - https://authorwars.com/publications/by-gas-mask-and-fire-hydrant-906139.html

Overview:

Title: By Gas Mask and Fire Hydrant
Author: M. John Harrison
Year: Unpublished
ISBN-10: 0048232475
Publisher: Savoy Books
Binding: Paperback
Type: Novel
Title Reference: By Gas Mask and Fire Hydrant
Notes: Advertised in the back of the Savoy editions of The Glass Teat with blurb and size (125 x 193mm) and giving the ISBN as 0 04 823247 5. Also advertised in the back of the Savoy edition of The Golden Barge with blurb, a date of Winter 1979 and "details to be announced" and giving a different ISBN of 0 86130 013 0 Savoy website states "We commissioned (and paid for) a novel with the working title By Gas Mask and Fire Hydrant...which, possibly, metamorphosed into In Viriconium." Neither of the printed ISBNs appear to exist.