Lou Diekemper, RJD Management Co, Inc. Share: RoyaltyA Full Membership Category Lou Diekemper, RJD Management Co, Inc. P.O. Drawer 2130 Lubbock, TX 79408 (806) 762-4186 (806) 762-8453 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.