The Texan Series. Three stories of the Texas struggle for independence, with an American boy, Ned Fulton, in the foreground:

The Texan Star
The Texan Scouts
The Texan Triumph

The Civil War Series. The principal battles of the Civil War are covered. In four of the stories Dick Mason, who fights for the North, is the leading character; in the other four his cousin, Harry Kenton, fighting on the Southern side, is featured:

The Guns of Bull Run
The Guns of Shiloh
The Scouts of Stonewall
The Sword of Antietam
The Star of Gettysburg
The Rock of Chickamauga
The Shades of the Wilderness
The Tree of Appomattox

Indian Wars of the West and Southwest. Not a series:

Apache Gold
The Last of the Chiefs (Custer’s defeat)
The Quest of the Four (Mexican War)

The Great West Series:

The Great Sioux Trail
The Lost Hunters

The World War Series. John Scott, a young American in Germany when the war opens, and Phillip Lannes, a young French friend, are the central figures: