Try touching base with the Spokane Convention & Visitors Bureau as well as Greater Spokane Inc -- the chamber of commerce.
Also check out the local newspaper's website,
www.spokesman.com and send an email to one of the business reporters.
Another possibility, touch base with the airport director, Lawrence Krauter, 9000 W. Airport Dr. #204, Spokane, WA 99224. (509) 455-6455. He would be in charge of the county/city board that has the contract for them to use their on-airport space.