The curtain rises on the gathering storm of secession. The theme of the fourth sequence is the preservation of the Union, which carries with it the extermination of slavery. Six volumes as follows:
27. THE COTTON KINGDOM, by William E. Dodd
28. THE ANTI-SLAVERY CRUSADE, by Jesse Macy
29. ABRAHAM LINCOLN AND THE UNION, by Nathaniel W. Stephenson
30. THE DAY OF THE CONFEDERACY, by Nathaniel W. Stephenson
31. CAPTAINS OF THE CIVIL WAR, by William Wood
32. THE SEQUEL OF APPOMATTOX, by Walter Lynwood Fleming
V. The Intellectual Life
Two volumes follow on the higher national life, telling of the nation's great teachers and interpreters:
33. THE AMERICAN SPIRIT IN EDUCATION, by Edwin E. Slosson
34. THE AMERICAN SPIRIT IN LITERATURE, by Bliss Perry
VI. The Epic of Commerce and Industry
The sixth sequence is devoted to the romance of industry and business, and the dominant theme is the transformation caused by the inflow of immigrants and the development and utilization of mechanics on a great scale. The long age of muscular power has passed, and the era of mechanical power has brought with it a new kind of civilization. Eight volumes:
35. OUR FOREIGNERS, by Samuel P. Orth
36. THE OLD MERCHANT MARINE, by Ralph D. Paine
37. THE AGE OF INVENTION, by Holland Thompson
38. THE RAILROAD BUILDERS, by John Moody
39. THE AGE OF BIG BUSINESS, by Burton J. Hendrick
40. THE ARMIES OF LABOR, by Samuel P. Orth
41. THE MASTERS OF CAPITAL, by John Moody
42. THE NEW SOUTH, by Holland Thompson
VII. The Era of World Power
The seventh sequence carries on the story of government and diplomacy and political expansion from the Reconstruction (1876) to the present day, in six volumes: