The first record is from 1829 said to have information about Louis Wilmette. There is land seeming to have belonged to Louis Wilmette and Mitchell Wilmette.
The second record is another plat map from 1829. There is land seeming to be for Louis and Mitchell Wilmette.
I found these records but I will need to look closer at them to determine what they are and exactly what they are. I think these plat maps are from Illinois.