Resources 

North Dakota

NDIC
https://www.dmr.nd.gov/oilgas

ND - Webmapper
https://www.dmr.nd.gov/OaGIMS/viewer.htm

ND State Lands Dept.
http://www.land.nd.gov/minerals/

ND Petroleum Council
http://www.ndoil.org/

ND Geological Survey
https://www.dmr.nd.gov/ndgs/Resources/WBPetroleumnew.asp

ND Recorder's Information Network
http://www.ndrin.com/

Montana

Montana Board of Oil & Gas
http://bogc.dnrc.mt.gov/

MT State Minerals Management
http://dnrc.mt.gov/Trust/MMB/OG/Default.asp

Montana Oil & Gas - Webmapper
http://www.bogc.dnrc.mt.gov:4899/website/mtcbm/viewer.htm

Montana Cadastral
http://svc.mt.gov/msl/mtcadastral/

Federal

BLM - Montana & Dakotas
http://www.blm.gov/mt/st/en.html

BLM - LR2000 Public Records
http://www.blm.gov/lr2000/index.htm

USGS
http://www.usgs.gov/