If you have ancestors who were here in 1858 or just want to see who lived where back then, this is a great map from the library of Congress:
1858 Map of the Parish of Ouachita
Did you know Henry Bry visited Thomas Jefferson at Monticello? Here is a letter he wrote to President Jefferson after his visit:
Transcript of Letter from Henry Bry to Thomas Jefferson
Henry Bry also wrote to James Madison asking him to send help in dealing with the local Native Americans:
Ouachita Parish History Tidbits 