Truman Arnold Pole Vaults to Top of Largest Private Companies List by Gwen Moritz Posted 4/2/2001 12:00 am Updated 6 years ago Truman Arnold Cos. of Texarkana, the largest privately owned company on Arkansas Business' annual list, isn't even in Arkansas. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.