Fort Smith Unveils Plaque Marking City Time Capsule by Arkansas Business Staff Posted 3/4/2013 12:00 am The city of Fort Smith on Thursday unveiled a plaque marking the site of a city time capsule on the west entrance of the Fort Smith Convention Center. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.