The Library of Congress classification system was created in 1897 and some of the terms within the system marginalized minority groups like the LGBTQIA+ community. Little has been done to fix this, making searches for items related to those topics difficult. Here's how to find resources while working with an imperfect system.
A subject heading helps categorize books and connects them with others on the same subject. It is not a keyword (a general phrase) used to search. Headings are specific, more formal, and sometimes difficult to work. You can find them beneath the book's description in or .