Ed Walsh more or less defined pitching excellence for his era, so any set without him would seem like a mistake. In 1910, Ed somehow led the AL in losses (20) and ERA (1.27) during the same year, which tells you something about the quality of his team's offense! 

This colorful, foundational E90-1 American Caramel set helped usher in candy cards as a popular marketing tool linked to baseball, as kids who wanted one of them also needed to get the other. (It does not seem a coincidence that T206 tobacco and E90 caramel sets did this in parallel from 1909-11.) The E90 checklists grew for multiple years, adding players and variations that continue to bedevil collectors today. This card's diagonal crease at upper left contributes most to its PSA VG 3 grade, with slightly rounded corners and marks on its borders also playing a role. It remains an amazing player from a tough set, however you tell the story.