REMOVE

1. Aeronautical charts--Canada
2. Canada--Index maps
3. Index map of Canada (air) 1: …
4. Index map of Canada (air) 1: …
5. Canada

WHAT

1. Index map of Canada (air) … (1)
2. Lower Canada--Index maps (1)
3. Quebec (Province)--Index … (1)

WHERE

1. North and Central America (1)
2. W 72°00'--W 55°15'/N 52°0 … (1)

WHO

1. Canada. Hydrographic and … (1)
2. United States. Army Map S … (1)
3. United States. Army Map S … (1)

WHEN

1. 1943 (1)