structural:scholar_edition, stylistic:tone
Historiography

Historians have worked to trace the route of de Soto's expedition in North America, a controversial process over the years. Local politicians vied to have their localities associated with the expedition. The most widely used version of "De Soto's Trail" comes from a study commissioned by the United States Congress. A committee chaired by the anthropologist John R. Swanton published The Final Report of the United States De Soto Expedition Commission in 1939. Among other locations, Manatee County, Florida, claims an approximate landing site for de Soto and has a national memorial recognizing that event. In the early 21st century, the first part of the expedition's course, up to de Soto's battle at Mabila (a small fortress town in present-day central Alabama), is disputed only in minor details. His route beyond Mabila is contested. Swanton reported the de Soto trail ran from there through Mississippi, Arkansas, and Texas.

Historians have more recently considered archeological reconstructions and the oral history of the various Native American peoples who recount the expedition. Most historical places have been overbuilt and much evidence has been lost. More than 450 years have passed between the events and current history tellers, but some oral histories have been found to be accurate about historic events that have been otherwise documented.

The Governor Martin Site at the former Apalachee village of Anhaica, located about a mile east of the present Florida capital in Tallahassee, has been documented as definitively associated with de Soto's expedition. The Governor Martin Site was discovered by archaeologist B. Calvin Jones in March 1987. It has been preserved as the DeSoto Site Historic State Park.

The Hutto/Martin Site, 8MR3447, in southeastern Marion County, Florida, on the Ocklawaha River, is the most likely site of the principal town of Acuera referred to in the accounts of the entrada, as well as the site of the seventeenth-century mission of Santa Lucia de Acuera.

As of 2016, the Richardson/UF Village site (8AL100) in Alachua County, west of Orange Lake, appears to have been accepted by archaeologists as the site of the town of Potano visited by the de Soto expedition. The 17th-century mission of San Buenaventura de Potano is believed to have been founded here.

Many archaeologists believe the Parkin Archeological State Park in northeast Arkansas was the main town for the indigenous province of Casqui, which de Soto had recorded. They base this on similarities between descriptions from the journals of the de Soto expedition and artifacts of European origin discovered at the site in the 1960s.

Theories of de Soto's route are based on the accounts of four chroniclers of the expedition.

Milanich and Hudson warn that older translations of the chronicles are often "relatively free translations in which the translators took considerable liberty with the Spanish and Portuguese text."

The chronicles describe de Soto's trail in relation to Havana, from which they sailed; the Gulf of Mexico, which they skirted while traveling inland then turned back to later; the Atlantic Ocean, which they approached during their second year; high mountains, which they traversed immediately thereafter; and dozens of other geographic features along their way, such as large rivers and swamps, at recorded intervals. Given that the natural geography has not changed much since de Soto's time, scholars have analyzed those journals with modern topographic intelligence, to develop a more precise account of the De Soto Trail.