Microfilm copies of these records are available at the Family History Library and Family History Centers. You can search by names, life events such as a birth or marriage, or by a relationship like parent or spouse.
Indiana Marriage Coverage Table you can see a coverage table for the Indiana Marriage Records. The Coverage Table shows the places and time periods of the original records in this collection. The table is not totally inclusive and the list is also not 100% inclusive.
If you are looking for vital records in Indiana, and you have some names to start with, this is a great resource. The site is free to use, just sign up for a free account.
For information about adoption records in Indiana, visit Indiana Adoption Records Information.