The Indiana Genealogical Society has added a database for Steuben County to the County Records section of the Members Only area:
--Index to Mortality Schedule for Steuben County, Indiana (1860)
The 1860 mortality schedule was a special schedule to the federal census that listed those who had died between 1 June 1859 and 31 May 1860.
This is a premium database, accessible only to IGS members.
The Indiana Genealogical Society now has 818 databases in the Members Only area. They cover all 92 Indiana counties and encompass 500,000+ records.