Sherry, found this while doing a search on your Hugh Allison..Perhaps, this may help on something else for you:

Missouri's Union Provost Marshal Papers: 1861 - 1866

http://www.sos.missouri.gov/archives/provost/

Allison, Hugh-- County: Benton-- Arrested for participating in a robbery of McClurg's store at Linn Creek. Claims he is innocent and victim of spite by member of Home Guard. He is a Southern man, but does not support rebellion. N.D. --Reel No: F 1216

Allison, Hugh-- County: Benton-- Oath--Date: 01-22-1862 --Reel No: F 1216

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Gay