State's Largest Foundations Still Gaining Assets by Gwen Moritz Posted 7/2/2007 12:00 am Updated 3 years ago The wealthiest nonprofit in Arkansas remains the Walton Family Foundation in Bentonville, which had assets of more than $890 million at the end of 2005. 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.