CORNERSTONE ENTERPRISE Ltd. Nonprofit MemberOther (Nonprofit)Board of Directors CORNERSTONE ENTERPRISE Ltd. Visit Website Request Info P.O. Box 23177 Overland Park , Kansas 66283 (816) 974-7912 About Map About We help students and young adults navigate the transition into adulthood. This transition can pose a strain on the family unit, so we also offer services that provide support for families. What's Nearby? Distance: 5 10 15 20 25 50 mi.