Wyo. Stat. § 9-4-101: Fiscal year; delivery of state property by treasurer and auditor to successors.

The fiscal year for all agencies, boards, commissions, departments, instrumentalities or institutions of the state government shall commence on July 1 in each year, except as otherwise specifically provided or authorized by law. At the end of their respective terms of office the treasurer and auditor shall deliver to their successors all official books, papers, records and balances of funds in their possession. If either or both successors are not elected or appointed and qualified, the existing incumbent of the office shall retain the state property until the election or appointment and qualification of his successor occurs.