Debt Management Purchasing District of Columbia Municipal Bonds If you are interested in purchasing District of Columbia municipal bonds, please visit Digital Assurance Certification to obtain Official Statements and detailed information related to every outstanding District of Columbia municipal bond. The District issues municipal bonds to pay for its Capital Improvements Program; however, the District does not sell municipal bonds in the secondary financial markets. Please contact a licensed broker to purchase these instruments. Brokers are listed in the yellow pages under "investment securities."