Indiana Code Title 6. Taxation § 6-1.1-6-11

Sec. 11. A person who wishes to have a parcel of land classified as native forest land, a forest plantation, or wildlands must file an application in duplicate with the state forester on the forms prescribed by the state forester.  The application must include the signature of the owner, the professional surveyor or other person described in rules adopted under section 9(c) of this chapter, the state forester, and the county assessor.