Porky Byron Petey on the Farm circa 1910 Mitchell Farm Cadillac MI ?

Description

Up for sale is this set of four photos of two boys and their pet pig Porky. The boys are Byron (the older boy) and Petey (the youngest.) There are five images up there but only four pictures that you will receive. The second image is just me having some fun in Photoshop cleaning up and colorizing one of the pictures.
One of these is dated 1919 so I assume they all are around that time period. The photo album they come from referrers to Mitchell Farm many times. My sister, who lives in Houghton Lake, got these somewhere. Our family on my mother's side goes back to Manton. So, I don't know if these are members of the famous Mitchell family from Cadillac, or not. Given Mitchell's lumber baron status, the pictures look a bit too average farm-like for his family, but what do I know.
The pictures measure approximately 3 1/2" by  5". All for one price. Thanks, Kevin