September 12, 1804 produced an unusually rich set of parallel accounts. Patrick Gass, John Ordway, Joseph Whitehouse, and William Clark each describe the same difficult passage near the mouth of the White River, but their entries diverge sharply in detail, register, and emphasis — offering a useful case study in how the expedition’s documentary record was constructed across overlapping hands.
The Shared Frame and the Gass-Whitehouse Parallel
The most striking textual relationship of the day lies between Gass and Whitehouse. Gass records that the party
passed a long range of black bluffs on the south side, and an island covered with timber, which is all the timber that can be seen from this place. The country round is all hills and prairie.
Whitehouse’s entry reproduces the same observation almost verbatim:
passed a long range of black bluffs on the S. S. and an Island covered with timber. that is all the wood that is to be Seen at this place. all the country is hills and praries.
Both men also report that the boat “did not come more than 4 miles” (Whitehouse) or “did not make today more than four miles” (Gass), and both note that Clark, Newman, and Gass himself went hunting. The close verbal correspondence suggests Whitehouse drew on Gass’s notes — or that both copied a shared field record — a pattern observable elsewhere in their journals. Whitehouse adds one detail Gass omits: the hunting party set out “at 12 oclock,” and Reuben Fields “continued on with the horse.”
Ordway’s Drama and Clark’s Geology
Ordway, by contrast, supplies the day’s most vivid action. Where Gass and Whitehouse summarize the river’s difficulty in a sentence, Ordway dramatizes it:
the Boat wheeled Several times and creened on hir Side So that we were obledged to Spring out and hold hir from oversetting, we hunted for the channel & were forced to turn back some distance & take another channel.
This is the only account that conveys how nearly the keelboat capsized. Gass mentions only “sand bars and strong current”; Whitehouse refers to “a Great deal of trouble.” Ordway also alone records that Lewis went ashore and “found another village of little Dogs in a Bottom prarie above the Island we called Troublesome Isd” — preserving both an expedition place-name and Lewis’s continued attention to prairie dog colonies.
Clark’s own entry is, characteristically, the most quantitative and the most geologically attentive. He alone provides the day’s most arresting figure of progress:
we passed (1) a Island the middle of the river at the head of which we found great dificuelty in passing between the Sand bars the water Swift and Shallow, it took 3/4 of the day to make one mile
Where the enlisted men round the day’s labor to four miles, Clark itemizes the worst stretch — three-quarters of a day for a single mile. He is also the only narrator to record the geological observation that he “observed Slate & Coal mixed, Some verry high hills on each Side of the river,” and the only one to count wildlife precisely: “Several Villages of those little animals, also a great number of Grous & 3 foxes.”
Register and Silences
The four entries together illustrate a consistent division of labor in the expedition’s documentary practice. Gass, writing for what would become the first published account, produces compact, publishable prose. Whitehouse echoes Gass closely, occasionally supplementing with timing details. Ordway, the orderly sergeant, captures incident and dialogue-adjacent action — the boat careening, the men springing overboard, Lewis naming an island. Clark concentrates on measurement, terrain, and natural history.
Notable silences sharpen the contrast. Neither Gass nor Whitehouse mentions the prairie dog villages that occupy both Ordway and Clark, despite Gass having been ashore hunting. Conversely, Clark does not mention the boat nearly oversetting — a striking omission given that he was on shore when it happened and would have learned of it only secondhand. The day’s record thus reconstructs itself only through the four entries read together: Gass and Whitehouse for the landscape, Ordway for the crisis on the water, Clark for the measure of how little ground was won against it.
