Cornerstone Acquisition & Management Company, LLC
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Contact Us

For US Mail:

Cornerstone Acquisition & Management Co., LLC
PO Box 8049
Rancho Santa Fe, CA 92067

For Courier Service (UPS/FedEx):

Cornerstone Acquisition & Management Co., LLC
16236 San Dieguito Road
Suite 4-23
Rancho Santa Fe, CA 92067

Cornerstone Main Office:
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Cornerstone Controlled Entities

American Assurance 2000, L.P. (formerly JDT 2000, L.P.)
Cobra Petroleum Company, LP
Royalty Repository II, LLC

If you or your company desires to lease, obtain a term assignment or any other type of exploration or production agreement from any of the entities listed, please contact us at 858-779-5800. If you are an oil and gas purchaser or operator and any production-related payments are due to any of the entities listed, please forward payments to the applicable address below for deposit:



American Assurance 2000, L.P. (formerly JDT 2000, L.P.)

Dept 1240
P.O. Box 17180
Denver, CO 80217-0180



Cobra Petroleum Company, LP

P.O. Box 8049
Rancho Santa Fe, CA 92067



Royalty Repository II, LLC

Dept 1250
P.O. Box 17180
Denver, CO 80217-0180