If you need assistance, or for customers who are in Oklahoma and NOT tax exempt, please call Publications Customer Service at (800) 274-2687 (Monday - Friday, 8:30 a.m. - 5:00 p.m. Central). More information is available at Terms and Conditions and Shipping and Handling.

For INTERNATIONAL, ALASKA, OR HAWAII SHIPPING and/or NEXT DAY and TWO-DAY delivery options, contact (800) 274-2687.

Terms and conditions

To Order by E-mail, Phone, Fax, or US Mail

  • E-mail: NRCYSadmin@ou.edu
  • Toll Free Phone: 1-800-274-2687
  • Fax: 1-918-660-3737
  • Mail: NRCYS, 4502 E. 41st, Building 4W-2, Tulsa, OK 74135-2512

Contact us Monday through Friday from 8:30 a.m. – 5:00 p.m. (Central Time).

Payments Accepted

Visa, Mastercard, Discover, American Express, Purchase Order (Net 30 days), Check, Wire Transfer

Sales Tax

No state sales tax will be charged. For Oklahoma customers who are NOT tax exempt, please contact Julie Langston at 1-800-274-2687 to order.

Shipping and Handling

View information about shipping and handling.

NRCYS Federal ID


Review Copies

Please contact NRCYS’s Publications Department at 1 (800) 274-2687.

Canadian and International Orders

All Canadian and other international orders must be prepaid in U.S. dollars by Visa, Mastercard, Discover, American Express, or wire transfer. Do not send checks or currency.

Discount Policy

Some products are eligible for a price break based on the quantity purchased. Price breaks will be listed in the catalog under the product’s description page. 


Shipments are sent UPS Ground. Special handling on rush delivery requests will require additional postage and handling charges.

Return Policy

Full refunds will be issued within 45 days of purchase. Other restrictions may apply.

To return an item, mail postpaid by trackable carrier, all components intact, and in resalable condition, along with a copy of the invoice, marked CANCEL, to NRCYS, Attn: Returns, 4502 E. 41st St., Building 4W-2, Tulsa, OK 74135-2512. If item was prepaid, refund will be issued according to the original payment method.  Shipping costs will not be refunded on returns. Damaged items must be returned within one month.