A singular archive of observation and inquiry: fifty years of The Great Basin Naturalist indexed and arranged for discovery. A precise compass for naturalists. This natural history index brings the complete naturalist volumes from 1939-1990 into a single, reliable scholarly tool, converting a scattered scientific journal anthology into an accessible academic reference collection and living ecological research archive. Carefully organised entries from flora and fauna studies sit beside long-running biodiversity documentation, so that researchers and scholars may follow species records, habitat notes and methodological change across decades of twentieth century natural science. As a biological abstracts compendium it answers immediate research needs; as a university library resource it supplies context and continuity for teaching, citation and comparative work. The language remains plain and the scope remains ambitious: regional notes, field inventories and taxonomic references together form a mapped history of the Great Basin region. Republished by Alpha Editions in a careful modern edition, this volume preserves the spirit of the original while making it effortless to enjoy today - a heritage title prepared for readers and collectors alike. Beyond practical utility, the index has historical weight: it records how local observation fed broader scientific questions, provides baseline data for later conservation, and protects a strand of the twentieth century natural science record that is otherwise dispersed. Organised for clarity and quick retrieval, the index supports comparative studies, long-term monitoring and citation, and provides a bridge between original articles and contemporary databases. Casual readers find vivid gateways into plants, animals and place; classic-literature collectors will recognise the value of a complete set preserved with care. Librarians, curators and field biologists will appreciate the rigour and continuity of the entries, while historians of science will find a compact dossier of changing priorities and methods. Whether consulted at a desk or cherished on a shelf, this anthology-index remains an indispensable archive for anyone interested in the biodiversity and ecological story of the Great Basin region.