He was acting as PM in Fulton as early as Dec 1861. see https://www.fold3.com/image/286857146
He was very active in the role with numerous arrests and bonds made in and around Fulton in Jan to March 1862. He also got in a verbal fight with the PM in Mexico who apparently was holding prisoners that had valid oaths and bonds and at least one with a parole from PM in St. Louis. One was the result of Snedicor misspelling the middle initial of a gentleman, for which he took responsibility. This in March of '62.