Before authority over county administrative affairs was transferred to the county commissioner, the judge of the probate courts had jurisdiction over many matters pertaining to county affairs, including, but not limited to, property, tax, roads, bridges, ferries, militia districts, vacancies in county offices, claims against the county, and collection and disbursement of money belonging to the county. The book contains an index by person's name and a record of the county business administered. A list of these books by date can be found below.

Information found in these books include:
The information varies according to the type of county business, but includes the following:
Name of petitioner
Name of judge
Date
Description of what is being recorded