Although "jazz" music can be found throughout the Library's music collections, it is important to keep in mind a few specialized classification numbers that may help guide your research. For example, the Library holds a large collection of jazz lead sheets under the Library of Congress (LC) Classification Number -- M1356.2.
Using the Library of Congress Online Catalog, start by selecting the "Browse" option and then select "CALL NUMBERS (LC Class No.)" from the drop-down menu.
More information on specific useful classifications for researching "jazz" are listed below,
ML3509.A-Z Other regions or countries, A-Z