D.C. Code § 47-135
The Mayor of the District of Columbia is authorized to establish a working fund without fiscal year limitation for the purpose of printing, duplicating, and photographing; and the unexpended balances in the miscellaneous trust fund accounts "Operating Account, Printing" and "Operating Account, Blueprinting" shall be deposited to said working fund; and the fund shall be reimbursed for all services performed thereunder.
D.C. Code § 47-135
Transfer of unexpended balances: Section 7(g) of the Act of June 14, 1980, D.C. Law 3-70, provided for the transfer to the Department of General Services Internal Service Fund, or successor fund established by the Mayor, of any unexpended balances in the working capital fund for printing, duplicating, and photographing.