Audit reports and supporting papers submitted to the Board of Supervisors by public accountants employed by the Board to make the annual audit. Each report contains a statement by the auditor on the condition of the financial records of the county in general, commission or institution, and any errors that were found; and summary financial statements showing the receipts, disbursements, and various funds for the year.

The audit reports consist of four series. COUNTY-WIDE AUDITS, 1932-1969, cover the county in general and the main departments. Departments included vary over time but usually include the Clerk of Circuit Court, Clerk of County Court, and often include Sheriff, Register in Probate, District Attorney and the Probation Officer. Reports are arranged chronologically and each one covers the calendar year.

More detailed reports of the County Hospital, Mount Washington Sanatorium, the County Home, and County Highway Commission were submitted separately. Through the 1950s reports of these various HEALTH AND WELFARE INSTITUTIONS were submitted in one report. Only a few years of these comprehensive reports survive. This series also contains reports of the Mount Washington Home, 1960-1976. Note that in the early 1960s the Home underwent several name changes: from the Mount Washington Sanatorium to the Eau Claire Home for the Aged to the Mount Washington Home; nonetheless it was the same institution. All health and welfare institutions were audited according to the Fiscal Year (FY), July 1-June 30.

COUNTY HIGHWAY COMMISSION-Report on the Examination of Financial Statements with Supplementary Data, are present for the calendar years, 1928-1930, 1948-1961, 1963-1977; 1981-1982. Included in this sub-series is a list of names and expenses for Committee Meetings, 1939-1941.

MISCELLANEOUS REPORTS, 1937-1976, consist of financial statements, analysis, and statistical reports of various departments and funds. Reports are arranged alphabetically by title.