39 U.S.C. § 2002: Capital of the Postal Service

Assets shall be valued on the basis of original cost less depreciation, to the extent that such value can be determined. The value recorded on the former Post Office Department’s books of account shall be prima facie evidence of asset value. All liabilities attributable to operations of the former Post Office Department shall remain liabilities of the Government of the United States, except that upon commencement of operations of the Postal Service, the unexpended balances of appropriations made to, held or used by, or available to the former Post Office Department and all liabilities chargeable thereto shall become assets and liabilities, respectively, of the Postal Service. The capital of the Postal Service at any time shall consist of its assets, including the balance in the Fund and the balance in the Competitive Products Fund, less its liabilities. the mail equipment shops located in Washington, District of Columbia; all machinery, equipment, and appurtenances of the former Post Office Department; all real property whose ownership was acquired by the Postmaster General under former section 2103 of this title , as in effect immediately prior to the effective date of this section, or which immediately prior to such effective date, is under the administration of the former Post Office Department for the purpose of constructing a postal building from funds appropriated or transferred to the former Post Office Department, together with all funds appropriated or allocated therefor; all real property 55 percent or more of which is occupied by or under control of the former Post Office Department immediately prior to the effective date of this section; all contracts, records, and documents relating to the operation of the departmental service and the postal field service of the former Post Office Department; and all other property and assets of the former Post Office Department. After the commencement of operations of the Postal Service, the President is authorized to transfer to the Postal Service, and the Postal Service is authorized to transfer to other departments, agencies, or independent establishments of the Government of the United States, with or without reimbursement, any property of that department, agency, or independent establishment and the Postal Service, respectively, when the public interest would be served by such transfer.