Incoming Resources
- PennWell, Tulsa, OK, c2002
- PennWell, Tulsa, Okla., c2004
- PennWell, Tulsa, OK, c2001
- PennWell, Tulsa, Oklahoma, 2014, ©2014
- PennWell, Tulsa, Okla., c2007
- PennWell, Tulsa, Okla., c2008
- PennWell, Tulsa, Okla., c2005
- PennWell, Tulsa, OK, c1997-
- PennWell, Tulsa, OK, c2006
- PennWell, Tulsa, Okla., c2000
- PennWell, Tulsa, OK, c2004
- PennWell, Tulsa, OK, 1999