Sacagawea gives birth to a baby boy, Jean Baptiste, nicknamed "Pompy."
The "permanent party" consisting of Lewis and Clark and thirty-one others leave Fort Mandan and continue west. The remaining people return to St. Louis with letters to their families and discoveries for President Jefferson.
Lewis and another hunter kill a grizzly bear.
Charbonneau lets go of the boat rudder and almost overturns the boat. Sacagawea rescues most of the items washed overboard and impresses Lewis and Clark with her calmness.
Lewis arrives at the beautiful Great Falls of the Missouri.
The expedition reaches the Three Forks of the Missouri.
The expedition meets a group of Shoshone Native Americans, including Chief Cameahwait, Sacagawea's brother. Sacagawea helps the expedition trade for horses.
August 30-September 22
They cross the snowy Bitterroot Mountains. Several horses fall and are injured and the expedition almost runs out of food.
Lewis's shipment of artifacts, animals, and writings arrives at Monticello, Thomas Jefferson's house. Most of the objects sent to Jefferson have disappeared over the years, and the only original Lewis and Clark object is a pair of Elk Antlers.
They meet a group of Nez Perce Native Americans who give them fresh salmon and new clothes.
The expedition builds dugout canoes and paddles down the rapids of the Clearwater and Snake Rivers. One boat hits a rock and sinks, along with most of their food.
The expedition reaches the Columbia River.
The expedition reaches the Pacific Ocean.
They settle down for winter at Fort Clatsop.
The explorers return home to St. Louis, Missouri. Explore the dates below for big events in 1806.
The expedition leaves Fort Clatsop and heads home.
The Corps of Discovery arrive at a frontier village, the first white settlement they have seen since 1804.
The explorers arrive back in St. Louis.
Continue to see the trail today.