Photo: Wabash Mather Boxcar 19290 (1910)
A photo from the Detroit Public Library:
Click and hold to enlarge photo.
Interesting Mather logo.
View of several workmen loading wooden crate into railroad car at Michigan Steel Boat Company. "From Michigan Steel Boat Co., Detroit, Mich." painted on crate. "Mather car" painted on railroad car. Handwritten on back: "Companies--Michigan Steel Boat Co., 1910."
Another view, but blurry: