The Russians fled south along the coast to the mouth of the Hoh River where many were captured and taken captive by the Hoh people. Those who evaded capture fled up the Hoh River. They built a small blockhouse and survived into the winter. In February they surrendered to the Hoh tribe at the mouth of the Hoh River. The captives were exchanged and traded among the coastal tribes, with most ending up with the Makah in the Neah Bay area. In 1810 the "Lydia", commanded by Captain T. Brown, an American working for the Russian American Company, sailed into Neah Bay. The thirteen surviving captives being held by the Makah were ransomed by Captain Brown, who then returned them to Sitka. In the 1850s Isaac Stevens, the first governor of Washington Territory, began negotiations with the tribes of the Olympic Peninsula with the goal of obtaining land cessions and creating Indian reservations. In 1855 a treaty was signed by representatives of the Quinault, Queets, Quileute, and Hoh. The negotiations were done in the trade pidgin language Chinook Jargon. The treaty, known as the Treaty of Olympia (or the Quinault River Treaty), was ratified by Congress in 1859. Its terms included the cession of most of the western Olympic Peninsula to the U.S. federal government with a reserve to be determined later. The Quinault Indian Reservation was established in 1863 and the treaty signature tribes were expected to move there. The Hoh, however, refused to move. In 1872 the Indian agent R.H. Milroy explained that the Hoh did not believe they had agreed to cede their land and that the treaty signed had been explained to them as being an agreement about keeping peace with U.S. citizens and allowing them to enter the Hoh's territory and trade for furs. In 1893 President Grover Cleveland signed an executive order establishing the Hoh Reservation on the south side of the mouth of the Hoh River. Early pioneers wishing to settle in the Hoh River valley faced numerous challenges including the dense forest and enormous trees, regular large-scale flooding, isolation from markets, and the impracticality of navigating the Hoh River due to its swift current, floods, and frequent logjams. Nevertheless, land relatively far upriver was settled. The area now within Olympic National Park was never inhabited by non-indigenous people. By 1900 the population in the Hoh River Valley was enough to warrant two post offices, one established in 1897, the other in 1904.