This is the kind of material that rarely survives the "after the show" period.  A 17" x 11" Dale Chihuly etal program, 2 smaller programs, 2 tickets from the preview, 2 newspaper articles from Portland newspapers.  The show ran from Oct 25, 1997 - Jan. 18, 1998.  If you collect Chihuly this is a great addition to your trove.