Need Help Identifying Baseball Studio Cards!
 

Can anyone help me identify these baseball playing cards?
They look like studio cards from the turn of the century, but I haven't found examples of them.
Thanks!

If you could even help narrow the years, based on the printing style, green and blue tone, etc., that would be helpful as well!
Additional information: they are near typical playing card size and the images are not glued/attached to the playing card.

I've found the information. Here it is for anyone who wants to know.

Russell's Rustlers "Base Ball Boys" playing cards, made by Willis W. Russell Card Co. in 1906