19151999

19151999 is a numeric designation that has been used in various archival and bibliographic contexts to refer to material covering the period from the year 1915 through to 1999. The number is most commonly found in library cataloging systems, where it serves as a simple identifier for collections that span nearly an entire 20th‑century era, and in some popular histories that treat the period as a single overarching narrative. Because it omits the intervening year 1916–1998, the designation can also be interpreted as a way of highlighting the central, transformative phases of the century, from the later years of World War I up to the cusp of the 21st century.

In academic settings, 19151999 has sometimes appeared in citations of serial publications such as newspapers and journals that were published continuously over that time span, allowing scholars to quickly locate serial sets that are no longer in circulation. Museums and archives occasionally use the term for exhibit series that aim to showcase artifacts from the industrial expansion, the Great Depression, World War II, the Cold War, and the late‑century technological boom. In the realm of digital preservation, the identifier has been applied to metadata bundles that feature digitized photographs, manuscripts, and audio recordings from 1915 to 1999.

The usage of 19151999 is largely pragmatic rather than symbolic; it does not denote an event by itself but rather functions as a concise reference for a broad historical continuum. While there has been no major cultural product—such as a film or novel—titled specifically “19151999,” the term is occasionally cited in encyclopedic articles and historical treatises that cover the late‑nineteenth‑to‑late‑twentieth‑century developments.