19571998

19571998 is a nonstandard period label used in bibliographic, archival, and cultural contexts to reference a broad span of roughly four decades—from the late 1950s through the late 1990s. As a concatenated numeral range, it lacks formal universal definition, but it appears as an index key, project theme, or period framing in catalogs, databases, and creative works. When used, it signals content or analysis that engages with the social, technological, political, and cultural trajectories of that era, rather than targeting a single calendar year.

Scope and themes: The period encompasses significant transitions in technology (from early computing and telecommunications to the dawn of the internet), in politics (the evolution of postwar order, decolonization, and the Cold War’s trajectory and end), and in society (civil rights movements, changes in gender norms, and the globalization of culture and economies). In arts and media, the span covers a range of movements and formats—from traditional media to digital dissemination, and from regional to transnational productions.

Usage in research and archiving: 19571998 is used to compare long-term developments across multiple domains, or to group items that share production dates or setting within this window. It can help analysts examine continuity and change across roughly four decades as a single analytical frame.

See also: 1957, 1998, time periodization, archive labeling.