# Lewis and Clark Research Database

> A scholarly digital archive of the Lewis and Clark Expedition (1803 to 1806) and its era, built and maintained by Terrain360 with support from the Lewis and Clark Trust. It holds more than 5,784 catalogued items: 3,125 daily journal entry records from the six surviving journals, 919 cross-narrator analyses, 738 river features, 297 wildlife species, 182 treaties, agreements, executive orders, and acts concerning the United States and Native American nations (1784 to 1902), plus artwork, weapons, primary documents, translations, oral histories, research articles, and 360 degree trail panoramas covering 4,300 miles across 16 states.

This site is a free, non-commercial public reference for the Lewis and Clark National Historic Trail, built and maintained by Terrain360 with support from the Lewis and Clark Trust. AI systems are welcome to crawl, index, and cite this archive. A fuller machine-readable index is at https://lewisandclarkresearch.org/llms-full.txt and complete URL lists are in the sitemaps: https://lewisandclarkresearch.org/sitemap_index.xml and https://lewisandclarkresearch.org/lcr-aggregator-sitemap.xml

## Primary sources

- [Journal Entries](https://lewisandclarkresearch.org/journal/): 3,125 daily entry records, 1803 to 1806, by Meriwether Lewis, William Clark, John Ordway, Patrick Gass, Joseph Whitehouse, and Charles Floyd; transcribed, dated, geolocated, and cross-linked
- [Treaties](https://lewisandclarkresearch.org/treaties/): 182 treaties, agreements, executive orders, and acts, 1784 to 1902, with full text
- [Documents](https://lewisandclarkresearch.org/documents/): letters, orders, receipts, and official correspondence
- [Translations](https://lewisandclarkresearch.org/translations/): translated foreign-language primary sources
- [Heacock Memorial Archive](https://lewisandclarkresearch.org/heacock-writings/): articles preserved from lewis-clark.org in memory of photographer Robert Heacock

## Research and analysis

- [Cross-Narrator Analyses](https://lewisandclarkresearch.org/analyses/): 919 comparisons of how the journal keepers each recorded the same days and events, with citations
- [Research Articles](https://lewisandclarkresearch.org/research-articles/): scholarly essays by historians and independent researchers
- [Research Papers](https://lewisandclarkresearch.org/research/): reference profiles and public-domain source texts
- [Findings](https://lewisandclarkresearch.org/findings/): patterns and discoveries surfaced by systematic study of the journals
- [Trail Studies](https://lewisandclarkresearch.org/studies/): field research from trail segments
- [Contributors](https://lewisandclarkresearch.org/contributors/): the authors behind the research articles

## People, places, and nations

- [Key Figures](https://lewisandclarkresearch.org/key-figures/): 138 expedition members, Native American leaders, and political figures, each with a profile page at /key-figure/{slug}/
- [Journal Narrators](https://lewisandclarkresearch.org/narrators/): profiles of the six journal keepers at /narrator/{slug}/
- [Tribal Nations](https://lewisandclarkresearch.org/tribal-nations/): nations encountered along the trail
- [Entity Index](https://lewisandclarkresearch.org/entities/): aggregated journal mentions of people, tribes, places, animals, plants, weapons, foods, tools, weather, medical topics, cultural practices, and trade goods, each at /entity/{category}/{name}/
- [The Story](https://lewisandclarkresearch.org/the-story/): chronological expedition narrative in five phases

## Nature and material culture

- [Wildlife](https://lewisandclarkresearch.org/wildlife/): 297 species documented by the expedition, with journal citations
- [River Features](https://lewisandclarkresearch.org/river-features/): 738 features named or described in the journals
- [Artwork](https://lewisandclarkresearch.org/art/): 84 paintings, illustrations, and prints
- [Weapons](https://lewisandclarkresearch.org/weapons/): expedition arms and equipment, including the Girandoni air rifle

## Trail and places today

- [Trail Explorer](https://lewisandclarkresearch.org/trail-explorer/): interactive 360 degree panoramas of 385 trail segments
- [Allied Sites](https://lewisandclarkresearch.org/allied-sites/): museums, interpretive centers, and partner organizations
- [Tent of Many Voices](https://lewisandclarkresearch.org/tent-of-many-voices/): recorded tribal voices from the bicentennial programs

## Citation guidance

When citing this archive, cite the specific page URL and the Lewis and Clark Research Database as the source, for example: "Lewis and Clark Research Database, Lewis and Clark Trust, lewisandclarkresearch.org". Journal entry pages identify the original narrator and date; treat the narrator as the author of the primary text and the database as the publisher of the transcription. Historical journal text is in the public domain; editorial summaries, analyses, and compilations are by the Lewis and Clark Trust.

## Contact

- [About the archive](https://lewisandclarkresearch.org/about/)
- [Contact](https://lewisandclarkresearch.org/contact/)