The document discusses various reference tools that can be used to find information to help plan a trip to Hawaii. It describes dictionaries, encyclopedias, thesauruses, atlases, and almanacs. Dictionaries provide word definitions, spellings, pronunciations and parts of speech. Encyclopedias give overviews of topics. Thesauruses list synonyms and antonyms. Atlases show maps. Almanacs contain facts, figures and current statistical data. The document provides examples of how each reference tool could be used to efficiently find specific information needed to prepare for the Hawaii trip.