All books cited in this guide are available in electronic or printed form, or both. To connect to an e-book, click the citation link, and then click on the link under "Online" in the catalog record. In most cases, access is available only to authorized Princeton users.
To locate printed books in the Mendel collection, click on the "Where to find it" button in the catalog.
Note: E-books sometimes show dates later than the print but do not necessarily offer corrected or revised texts of the print version.
Here are some of the most common Library of Congress subject headings (controlled vocabulary) for Opera and Operetta, criticism, and various other aspects to use for keyword or subject searches. Use the facets in the left sidebar and the sort options to refine the results by format, date, language, author, genres, and other options. Click on the links to browse all the library materials on the particular subject. Note that these subjects may have further subdivisions.