Columbia subject headings:
Adventure and adventurers--Juvenile fiction.
Children--Conduct of life--Juvenile fiction.
Conduct of life--Juvenile fiction.
Courage--Juvenile fiction.
Hunters--Juvenile fiction.
Letter carriers--Juvenile fiction.
Harvard subject headings:
Adventure stories.
Children--Conduct of life--Juvenile fiction.
Conduct of life--Juvenile fiction.
Courage--Juvenile fiction
Hunters--Juvenile fiction.
Letter carriers--Juvenile fiction.
Letter carriers.
Princeton subject headings: