Antoine-Simon Le Page du Pratz

Antoine-Simon Le Page du Pratz (1695?–1775) was a French ethnographer, historian, and naturalist who is best known for his Histoire de la Louisiane. It was first published in twelve installments from 1751 to 1753 in the Journal Economique, then completely in three volumes in Paris in 1758. After their victory in the Seven Years' War, the British published part of it in translation in 1763. It has never been fully translated into English.

The memoir recounts Le Page's years in the Louisiana colony from 1718 to 1734, when he learned the Natchez language and befriended native leaders. He gives lengthy descriptions of Natchez society and its culture, including the funeral rituals associated with the 1725 death of Tattooed Serpent, the second-highest ranking chief among the people.

It also includes his account of Moncacht-Apé, a Yazoo explorer who told him of completing travel to the Pacific Coast and back, likely in the late 17th or early 18th century. Through this traveler, Le Page learned of oral traditions held by indigenous people of the West Coast. They told of the first Native Americans reaching North America by a land bridge from Asia. Le Page's book was carried as a guide by the Lewis and Clark Expedition as it explored the Louisiana Purchase starting in 1804.