Yes, you can read William Webster's dedication speech (5 Nov 1990) in "The Cryptogram", Nov/Dec 1991, page 8 - it's scanned on Jew-Lee's "Kryptos Project" website, under "Kryptos", "CIA Cryptogram Articles", Binder2.pdf.
 

 If you do a search through the archive here for "Tribute", people wrote it's a "tribute to [CIA] employees" (Doug Price, Sep 2017), "tribute to Native American origins" (Elonka, June 2003), "tribute to cryptography" (CNN, June 2005) ... there's a "tribute to Solaris" (de Boer, June 2014) ...
 

 but amusingly, in over 20,000 messages, nobody's mentioned the name of the sculpture in the CIA files, which is "Tribute To Information". It's virtually disappeared off the net ... a newspapers.com or Factiva search will turn it up (Guardian 12 March 1991 "Art of Deception has CIA baffled", Martin Walker), there's one result in books.google.com plus one in normal google (Time magazine 18 March 1991 "The Spooks' Secret Sculpture Garden" and 24 June 2001 "Grapevine", both David Ellis). If Jew-Lee hadn't scanned the Cryptogram you'd have to join the ACA and trawl through back issues to find the speech ... if you even knew it was there ... which goes to show all the info about the sculpture will gradually fade away, and/or disappear behind paywalls. Better make sure your PDF files are searchable with text!

 

 Tucked away in an internal courtyard at the Langley headquarters, where it can be seen only by CIA officials, authorised guests and Soviet spy satellites, the CIA has dubbed the work, for its own internal property files, Tribute To Information (Guardian 1991)

 

 The CIA does not allow the general public to visit its Langley, Va., compound, so Kryptos is on view only for employees or authorized visitors. Ironically, the Sanborn sculpture constitutes what the CIA calls its "Tribute to Information." (Time 2001)