OK, here's a project for the board. SCD lists the W-UNC "Big Head" strip cards as being somewhere in the 1916-1920 range, but couldn't narrow it down further. Based on the players included, and the images on the cards (e.g. a few have team emblems) can we get a more accurate year? The SCD is possibly incomplete, so if you have any information to share that might be helpful, it would be appreciated.
Here are some of Leon's for reference:
