|Source: Wikipedia, Illinois & Michigan Canal|
On 24 October 1851, John O'Brien and John Nolan received lots numbered 4 and 5 in block 93, town of La Salle (John O'Brien was deeded lot 5) from the trustees of the Illinois and Michigan Canal. They paid $150.
Two years later, on 26 October 1853, John O'Brien bought 40 acres in Section 27, Township 36 North range 2 East from land speculator Elias B. Stiles and Sybil C. Stiles. John paid $50 for the tract.
I do not currently have much more on John O'Brien's time in La Salle County. I was hoping there would be other land records from before he moved the family to Shelby County.