D.C. Mun. Regs. tit. 26-A, § 2105
2105.1 The management of a sinking fund subject to this chapter shall maintain its principal business office within the District of Columbia, shall keep all books, records, and files concerning the sinking fund within the District and shall not remove them from the District without the prior written approval of the Commissioner.
SOURCE: Final Rulemaking published at 36 DCR 5113 (July 21, 1989).