Filed Pursuant to 497 (d)
Registration File No.: 33-63305
PROSPECTUS SUPPLEMENT
Dated August 26, 1999
This Prospectus Supplement dated August 26, 1999 modifies the Prospectus for
the PaineWebber Pathfinders Trust, Treasury and Growth Stock Series 18 dated
July 23, 1999 (referred to herein as the "Trust") attached hereto (the
"Prospectus").
Bank One Corporation, an issuer of one of the equity securities held in the
Trust, has been sold from the Trust portfolio. The Sponsor directed the
Trustee to liquidate all such Bank One Corporation securities reflecting the
occurrence of materially adverse credit factors, that in the opinion of the
Sponsor, made retention of such securities not in the best interests of the
Unitholders.
