Enduring Resources IV, LLC (Corporate Member) Share: A Full Membership Category Enduring Resources IV, LLC (Corporate Member) 1050 17th Street, Ste. 2500 Denver, CO 80265 (303) 350-5107 Rep Info Map Whom to Contact Alex Campbell Phone: (303) 350-5107 What's Nearby? Distance: 5 10 15 20 25 50 mi.