Chapter 23 - CONTRACTS
- Section 431 - Contracts by Member of Congress
- Section 432 - Officer or employee contracting with Member of Congress
- Section 433 - Exemptions with respect to certain contracts
- Section 434 - Repealed
- Section 435 - Contracts in excess of specific appropriation
- Section 436 - Convict labor contracts
- Section 437 - Repealed
- Section 438, 439 - Repealed
- Section 440 - Mail contracts
- Section 441 - Postal supply contracts
- Section 442 - Government Publishing Office
- Section 443 - War contracts