Original Journals of the Lewis and Clark Expedition: 1804-1806, Parts 1 & 2 Volume 4This set was first published in 1904 from the manuscripts of the American Philosophical Society together with manuscript material of Lewis and Clark and from other sources including notebooks, letters and maps, and the journals of Charles Floyd and Joseph Whitehouse.Volume 4 Part 1 Journal and Orderly Book of Lewis and Clark, from Fort Clatsop and the preparation for the start home. January 21 - March 17, 1806.Volume 4 Part 2 Journal and Orderly Book of Lewis and Clark, From Fort Clatsop to Musquetoe Creek March 18 - May 1806.