BEHIND THE WALLS OF TERRA. World of Tiers Series Volume Four.

Special revised edition. Signed by the author. Original brown faux leather with gilt titles to the spine and gilt initials to the upper board, in the Alex Ebel illustrated dustwrapper. Housed in a slipcase. With a map of 'The World of Tiers' loosely laid in, as issued. A fine copy, the binding square and tight, the contents clean throughout and without previous owner's stamps or inscriptions. Complete with the fine, lightly rubbed dustwrapper featuring a wraparound illustration that remains without fading, loss or tears. Not price clipped ($30 on front flap). The lightly rubbed slipcase is in very near fine condition.

Issued in a limited edition of 250 copies, this example in numbered 24 and signed by Philip José Farmer in blue ink on the limitation page. The fourth title in the 'World of Tiers' series which is centred around a system of artificially created pocket universes.