What would be the best source for finding the state tree of Delaware?

A gazetteer is a geographical dictionary or directory that provides information about places, including physical features and statistical data. It typically includes details such as the state tree, which is a specific piece of information related to a locale's natural symbols and characteristics. In the case of Delaware, a gazetteer would specifically list the state tree along with other relevant information about the state.

While a dictionary might provide definitions and other word-related information, it would not typically include subjective or designated symbols like state trees. A yearbook might contain information about a specific school year, important events, and student achievements but would not focus on governmental or geographical details. A world atlas is designed primarily for geographical maps and locations, but it may not specifically highlight state symbols or trees in its content. Therefore, the gazetteer is the most suitable and direct source for identifying the state tree of Delaware.