The Music Library has more than 200,000 7-inch 45s. We also have 12-inch 45s, which were produced primarily in the 1970s and 80s. The Music Library has roughly 3,000 12-inch 45s, with another 1,300 to be cataloged. You can search and browse the 45s by using the search strategies listed below. Please note that "uncat" denotes a brief catalog record (not "uncataloged").
The 12-inch 45s can be searched using the strategies described above, replacing "uncat 7/45" with "12/45 disc".