Oklahoma
| Company | Category | Area | Address | Web | Contact person | |
| WRITECRAFT PUBLISHING CO | Books-publishing/printing | Oklahoma | 8821 S YOUNGS BLVD, OKLAHOMA CITY, Oklahoma, Oklahoma, 73159-6134, USA | - | - | Robert Ohern |
| WRITERS RESEARCH GROUP LLC | Religious Organization | Oklahoma | 8801 S KENTUCKY AVE, OKLAHOMA CITY, Oklahoma, Oklahoma, 73159-6214, USA | - | - | Karen Tingle |
| WRK OF OKLAHOMA | Engineering Consulting | Oklahoma | 2403 S SANGRE RD, STILLWATER, Payne, Oklahoma, 74074-2146, USA | - | - | Richard Whitney |