This chapter is devoted to sources about Barber and his music. The items vary from short-to medium-length articles in periodicals, to substantial scholarly articles, to full-length theses and dissertations. In Master’s or D.M. A. theses, the approach to the music will probably be general and descriptive, whereas technical and analytical discussions are more likely found in Ph.D. dissertations. In general, the longer the work, the longer the annotation in this book is likely to be. Some works are listed on the Répertoire International de Littérature Musicale (RILM) database, WorldCat, and a few on the Modern Language Association (MLA). Dissertations are usually listed on Dissertation Abstracts, often with the author’s own abstract; others may be listed on Doctoral Dissertations in Musicology. Periodical articles may be liste d on IIMP or JSTOR (d iscussed in Chapter 1), many with full texts. Items available on these sites are indicated in the annotation. They can be found by either author or title, but also as part of the collection under “Barber, Samuel.” Clicking the icon LIB will also state what libraries have copies of the sources, some of which will send a copy by interlibrary loan. Full texts of theses (as opposed to dissertations) are harder to find. Most are not online, and often only one copy is shelved at the college or university itself; it is therefore understandable that these institutions may be reluctant to loan them to other libraries, since they are literally irreplaceable if they are lost or damaged. If the information seems promising for research, then your only recourse may be to visit the college or university itself.