Captain William L. Hudson was commander of the US ship Peacock, one of the vessels of the United States Exploring Expedition to the Pacific, 1838-42, commanded by Commodore Charles Wilkes. He later transferred his flag to the Porpoise.

The journal begins when the expedition was en route from Fiji to Honolulu, and gives an account of the PEACOCK's visits to the Hawaiian Islands, Oregon, Southern California, the Line, Phoenix and Tokelau Islands, Samoa, the Ellice and Gilbert Islands (Tuvalu and Kiribati), and the wreck of the PEACOCK at the mouth of the Columbia River on the west coast of North America. After Hudson had transferred his flag to the USS PORPOISE, he crossed the Pacific to the Philippines, Sooloo Islands and Singapore. (The journal is a continuation of that filmed as PMB 146, which covers the Expedition's activities from 20 August 1838 to 8 August 1840)

Captain William L. Hudson was commander of the US ship Peacock, one of the vessels of the United States Exploring Expedition to the Pacific 1838-42, commanded by Commodore Charles Wilkes.

The journal begins on 20 August 1838 and is preceded by a list of the officers and scientific corps of the United States Exploring Expedition and correspondence relating to it. It continues to 8 August 1840 and includes copies of correspondence exchanged during the voyage. The journal and preceding papers fill 567 pages. On p.564 is a summary of the voyage showing the dates of arrival at various ports. Places visited in the Pacific were: The Tuamotu Islands, Tahiti, Samoa, Lord Howe Island, Tonga and Fiji.