Maps

Here are some good sites for finding all kinds of maps including thematic and topical one.

American Units in Vietnam

Map of Vietnam - American Units

(source)

Ho Chi Minh Trail

Ho Chi Minh Trail

(source)

Locating Maps

Here are some great pages that will help you locate maps including: country, military, thematic and topical.

Tet Offensive - 1968

 Map of Tet Offensive 1968

(source

Gulf of Tonkin

Gulf of Tonkin Naval Action 1964

(source)

Easter Offensive - March-May 1972

Map of Easter Offensive 1972

(source)