
Lewis & Clark National Historic Trail
The existing NPS-partnered L&C NHT map. The Mississippi 360° campaign extends this map seamlessly into the Lower Mississippi for the first time.
Match Challenge — Deadline May 15, 2026
Mississippi River 360° Virtual Documentation — Paducah to Memphis
A Lewis and Clark Trust initiative to document 295 river miles of the Lower Ohio and Mississippi corridor — every public access site, every key landmark — and make it free to the public.
The Story
Most people know about the 1804–1806 Corps of Discovery. Far fewer know that in 1809, Meriwether Lewis traveled from the Ohio River at Paducah down to Fort Pickering — present-day Memphis — on his final journey east. That stretch of river has never been comprehensively documented. Until now.
The Lewis and Clark Trust is leading a 360° documentation effort covering every mile from Paducah, KY to south of Memphis, TN — extending the existing Lewis and Clark National Historic Trail digital map seamlessly into the Lower Mississippi.
Lewis in 1809

Three years after the triumphant return of the Corps of Discovery, Meriwether Lewis was Governor of Upper Louisiana and under intense political pressure. In late summer 1809 he set out from St. Louis bound for Washington, D.C. to defend his administration of the territory and to publish the journals of the expedition. The chosen route ran down the Mississippi to the Chickasaw Bluffs, where Fort Pickering — modern-day Memphis — stood as the last federal outpost before the journey turned overland through the Natchez Trace.

Lewis arrived at Fort Pickering on September 15, 1809, exhausted and ill. He stayed two weeks under the care of Captain Gilbert C. Russell, recovering enough to continue. He set out again at the start of October, accompanied by his servant John Pernier, the Chickasaw agent James Neelly, and Neelly’s slave. The party crossed the Tennessee River and entered the Trace.
On the night of October 11, 1809, at Grinder’s Stand in middle Tennessee, Lewis died. The circumstances remain debated to this day — most scholars accept suicide; a vocal minority continue to argue murder. What is undisputed is that Lewis’s last great river journey followed the Lower Mississippi, and that no comprehensive visual record of that route exists.
This campaign closes that gap. Following the same corridor Lewis traveled in 1809, the Trust will document every mile from Paducah down past Memphis, building a free public archive that extends the Lewis and Clark National Historic Trail digital map into the Lower Mississippi for the first time.
Lewis sets out down the Mississippi bound for Washington, D.C.
Reaches the Chickasaw Bluffs (present-day Memphis).
Departs Fort Pickering with James Neelly and John Pernier.
Lewis dies in a roadhouse on the Trace; circumstances debated to this day.
Public projects in this same format. The Mississippi will pair seamlessly with the existing Lewis & Clark NHT map and these companion projects.

The existing NPS-partnered L&C NHT map. The Mississippi 360° campaign extends this map seamlessly into the Lower Mississippi for the first time.

Lower Ohio River exploration tool — the geographic neighbor of this campaign. The Mississippi work begins where this corridor ends, at the Cairo confluence.

Full-river 360° exploration tool with conditions, access points, and mile-by-mile imagery — a template for what the Mississippi will become.

Multi-state historic trail in 360° — precedent for NHT-scale partnership work with the National Park Service.
The Trust has put $15,000 on the line. Match it before May 15 and every dollar you give is doubled.
Make checks payable to Lewis and Clark Trust Inc..
Lewis & Clark Trust Inc.Pledge your match below. We'll follow up with mailing instructions or accept a letter of commitment by email.
Every dollar above the $15,000 match supports Phase 2 — the Katy Trail 360° demonstration in late June 2026.
Yes. Lewis and Clark Trust Inc. is a registered 501(c)(3) nonprofit. EIN: 45-4290831.
Funds are still applied to the project. The Trust may extend the campaign or reallocate per board decision.
Yes — we welcome partner organizations on the Lower Ohio and Mississippi. Email jim@lewisandclarktrust.org.
Free public access at terrain360.com with embed and API access for partner sites.
Jim Mallory (Lewis and Clark Trust) and Ryan Abrahamsen (Terrain360, founder).