Indiana Code Title 36. Local Government § 36-2-11-12

Sec. 12.  (a) The recorder shall index each volume of instruments the recorder records by:

(b) The recorder shall accurately maintain separate indexes of all the records of:

in the recorder's office.  The recorder shall index each deed or mortgage alphabetically, by the name of each grantor and grantee or mortgagor and mortgagee, and shall include in each index entry a concise description of the real property, the date of the deed or mortgage, and the number or letter of the book and the page at which each deed or mortgage is recorded.