PBS: The Mexican War
This outstanding site gives you background, profiles, great maps and graphics, and much more!

The US-Mexican War
Another great site about the war between America and Mexico from 1846 to 1848.

The Mexican-American War
Gets the Wikipedia treatment

Causes of the Mexican-American War
Why did it happen? Was it a simple process? Find out more here.

The Mexican War
Background and history of the conflict

The Mexican-American Memorial Homepage
This site pays tribute to the war, the soldiers, and more. In Spanish and English.