On the acquisition of ...

On the acquisition of Louisiana, in the year 1803, the attention of the government of the United States, was early directed towards exploring and improving the new territory.
 Meriwether Lewis

Quotes from the same author

The weather was fine and moderate. The hunters all returned, having killed during their absence three elk, four deer, two porcupines, a fox and a hare.
 Meriwether Lewis
The day cold and fair with a high easterly wind: we were visited by two Indians who gave us an account of the country and people near the Rocky mountains where they had been.
 Meriwether Lewis
We were also fortunate enough to engage in our service a Canadian Frenchmen, who had been with the Chayenne Indians on the Black mountains, and last summer descended thence by the Little Missouri.
 Meriwether Lewis