REMOVE

1. World Atlas
2. Delaware
3. Ohio
4. Maryland

WHAT

1. Agriculture (1)
2. Atlas Map (1)
3. Energy (1)
4. Forests (1)
5. School Atlas (1)

WHERE

1. Canada (1)

WHO

1. General Drafting Co., Inc … (1)
2. McGraw-Hill Book Company (1)
3. Western Publishing Compan … (1)

WHEN

1. 1968 (1)