Bull elk on Elk Mountain near Newcastle, Wyoming. Photo by Nate West. Oil rig in Wyoming. Wild horse near Rock Springs, Wyoming. Coal mining operations in the Powder River Basin of northeastern Wyoming. Pronghorn in Wyoming.
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Land Records

Master Title Plat (MTP)/Use Plats

Master Title Plat (MTP) and related records were developed in the 1950s under the Records Improvement Process (RIP). Information was extracted from the General Land Office tract books and plats, and used to create MTPs and Historical Indexes (HIs). Areas where MTPs exist are referred to as the new records area, and tract book records exist on microfilm. If an MTP wasn't created (because of no federal land or mineral interest), the area is referred to as the old records area, and our office still maintains the original tract books. Researchers need to refer to tract books and GLO plats for status information in the old records areas.

A MTP is a graphic illustration of land and mineral status within a township. The base of the MTP is based on the most recent survey information. MTPs are continually updated as status or survey information changes.

If there is a lot of detail within a small area, a supplemental plat is created to enlarge the detail for easier drafting and reading.

A Use Plat is created for certain uses, such as oil and gas leasing, coal leasing, and other minerals. If a use plat has been created, it will be noted on the lower right hand corner of the MTP.

Historical Index (HI)

An Historical Index (HI) is a chronological listing of title or status actions affecting a township. Because of the chronological format, information for a particular section or parcel is not easy to abstract.

A separate set of HIs was created for acquired lands and related actions. These are referred to as Acquired HIs (ACQ HIs).