Here is a group photo, with Anson Perry Winsor Jr. at the far right. (Click on photo to make it bigger.)
Here is a life sketch of Anson Perry Winsor Jr. (called "Uncle Perry" by those who knew him). Written by his granddaughter, Lela S. Nelson.
Here it says A.P. Winsor died in 1915, which is 2 years before his dad died.