X Windows on the World. Prentice-Hall, Inc. www.mistakeproofing.com/ Oregon 1000 NE Circle Blvd., Corvallis, Oregon, 97330 Facilitation available from X Windows on the World. Prentice-Hall, Inc. based in Corvallis, OR. Click the links below to visit our website or contact us via our profile page. Claim this Listing This listing is unclaimed. If this is your business you will need to do the following to claim it: 1) Submit a request to remove this old listing 2) Post a new listing to re-register this business If you have found this to be a duplicate listing, please submit a request to notify us.