REMOVE

1. Mexico 1:500,000
2. Mexico 1:500,000
3. GSGS (Series) ; 3507
4. United States. Army Map Serv …
5. 1933-

WHAT

1. Aeronautical charts--Mexi … (1)
2. GSGS (Series) ; 3507 (1)
3. Index map of Mexico 1:500 … (1)
4. Mexico 1:500,000 (1)
5. Mexico--Index maps (1)

WHERE

1. Mexico (1)
2. North and Central America (1)
3. W 120º--W 72º/N 32º--N 0º (1)