18521939

18521939 is a concatenated string that in bibliographic and biographical contexts typically represents the lifespan of a person born in 1852 and who died in 1939. The standard form uses an en dash to denote this range (1852–1939), but the digits may appear together without a separator in certain databases, file names, or catalog entries.

In reference works, this notation serves to identify individuals and distinguish them from others with similar names. It is commonly used in encyclopedias, biographical dictionaries, and genealogical records to provide a concise temporal anchor for a person’s life and work. When multiple people share a name, the lifespan helps readers locate the correct figure and distinguish their historical contexts.

The years 1852–1939 cover a period of significant social, technological, and cultural change. The late 19th century saw rapid industrialization, urbanization, and scientific progress, while the early 20th century brought dramatic shifts in politics, art, and society. World War I (1914–1918) and its aftermath reshaped international relations, and the interwar years witnessed the rise of modernist movements in science, literature, and the arts. The era culminated around the onset of World War II in 1939, marking the end of a particular phase of global history.

In digital and archival contexts, listing a person’s life as 1852–1939 helps with indexing, searchability, and disambiguation, ensuring clear identification across diverse datasets and publications.