Alden was an officer in the sloop-of-war 'Vincennes', the flagship of the United States Exploring Expedition which spent four years in the Pacific under the command of Commodore Charles Wilkes.

The journal gives an account - but not a day-by-day account - of the Vincennes voyage which took in the Tuamotu Archipelago, Tahiti, Samoa, Fiji, Australia, New Zealand, the Antarctic, Hawaii, the Gilbert (Kiribati), Ellice (Tuvalu) and Marshall Islands. See also PMB MS 124-146 and the Bureau's newsletter, Pambu, Dec. 1971:25, pp. 4-7.

Fisher was chief officer of 'The Woodlark'.

The logbook describes a whaling voyage to the South Pacific apparently under a Captain Hardwicke. The voyage began in Sydney and took in Lord Howe Island, Norfolk Island, the New Hebrides (Vanuatu), Solomon Islands, Torres Strait, Bismarck Archipelago (Papua New Guinea), Santa Cruz Group, Tikopia and New Zealand. There is a gap in the log from 2 February to 31 March 1857.

See PMB MS 432, material relating to Roman Catholic Mission Fiji.

Correspondence from New Caledonia, Wallis, Solomon Islands, Samoa, Tonga, Moruroa (Tuamotu archipelago), Sydney, New Zealand, France, Belgium, Naples.