State Single Audit Compliance Manual - https://portal.ct.gov/opm/igp-munfins/municipal-financial-services/state-single-audit-compliance-manual
Federal Single Audit Compliance Manual - https://www.fac.gov/compliance/
General Record Retention Schedules for Municipalities - https://portal.ct.gov/csl/departments/public-records/municipal-program/general-schedules?language=en_US
Governmental Accounting Research System
The Governmental Accounting Standards Board establishes accounting and financial reporting standards for U.S. state and local governments that follow generally accepted accounting principles (GAAP). The Governmental Accounting Research System (GARS) provides access to those standards. Click Here https://gars.gasb.org/Login