| 661. | Definitions. | |
| 662. | Guarantee of certificates. | |
| 663. | Inspection of accounts, books, etc., of railroad receiving financial assistance. | |
| 664. | Issuance of obligations to Secretary of the Treasury. | |
| 665. | Utilization of services and facilities of Federal departments and agencies; reimbursement; consultation with Board; coordination of activities with Federal departments and agencies. | |
| 666. | Court supervision of expenditures; findings; report to Secretary. | |
| 667. | Audit by Comptroller General; report to Congress. | |
| 668. | Guarantee fees; amount; deposit. | |
| 669. | Repealed. | |