In conjunction with the Spokane Valley Heritage Museum and its current Smithsonian Museum exhibit “Mail Call”, the U.S. Postal Service will set up a temporary post office at the museum on June 23rd. A special pictorial cancellation, created by Spokane artist Mary Ann Christman, will be available for your letters. This is a one-time event. The cancellation will only be available from 11-4 on Saturday, June 23, 2018. Bring your letters addressed to loved ones, your soldier friends, your stamp collecting buddies & history buffs. They will be cancelled & sent from the museum. Take some time to enjoy the museum’s Mail Call exhibit from the Smithsonian.