Douglas Cos. Sister Firm Buys IC Bus Property for $1.8M by Lee Hogan Posted 5/19/2014 04:25 pm Updated 1 year ago Diamond State LLC, a sister company of Douglas Cos. in Conway, has purchased 17.5 acres of land from school bus manufacturer, IC Bus LLC, for $1.8 million. 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.