9. Relation of the two houses of Congress. (Bryce, The American Commonwealth, vol. i, chapter xviii.)

10. The Senate as a judicial body. (Bryce, The American Commonwealth, vol. i, chapter x.)

11. Constitutional limitations on the powers of Congress. (Munro, The Government of the United States, chapter xx.)

12. Relation of Congress to the President. (Bryce, The American Commonwealth, vol. i, chapter xx.)

13. The war powers of Congress. (Any standard text on American government.)

14. The taxing power of Congress. (Any standard text on American government.)

15. Other financial powers of Congress. (Any standard text on American government.)

16. The power to regulate commerce. (Any standard text on American government. An excellent reference is Munro, The Government of the United States, chapter xvii.)

17. The postal powers of Congress. (Young, The New American Government and its Work, chapter xiii.)

18. The control of Congress over territories. (Kimball, The National Government of the United States, chapter xxii. See also any other standard work on American government.)