A catalog is a systematic list of items that provides descriptive details. Sterling is Howard University's online catalog, which contains books, films, microforms, newspapers, maps, and more. To search Sterling, one goes to the library's homepage and clicks on the link to access the catalog. When searching for information on interracial adoption in the United States, keywords like "interracial", "biracial", "race", "multiracial", "transracial adoption", "United States", "US", and "America" can be used. Boolean operators like "AND" and "OR" can help narrow or expand search results.