The Clerk's Vault has some criminal packets, primarily 1900-1915. I am not sure where other packets might be stored. The storage building north of the courthouse (Polk Street) housed the series of Criminal Order Books in 2015. The Clerk's Vault has the following index books related to criminal cases:
Fee Book No. 1, Criminal. Mar 1887 - Jun 1897
Fee Book No. 5, Criminal. Nov 1925 - Dec 1935
Fee Book No. 6, Criminal. Nov 1935 - Mar 1940
Entry Docket, Criminal Book, No. 2. Mar 1919 - Sep 1935
Indictment Record, No. 6. Dec 1896 - May 1901
Indictment Record, No. 7. Mar 1905 - Jun 1932
The dates listed above are those of the first case listed in the book and then the last case listed.
I doubt the above is not a complete list of the criminal index books in the Clerk's Vault. There are many volumes with missing spines and I have not identified all them, 12 Dec 2016, PMF.
1903-1909 Arrest Journal compiled by John J Marsh, Marshall.
Delinquency of Edward and Maurice Griffith, juveniles.
State of Indiana vs Nicholas Johnson.
State of Indiana vs George Keller,
William Morgan, indicted for carrying a concealed weapon.
Indictment for forgery, Peter Neeb.