david michael drenk wrote:
Try separating them by color of the text background.
That won't help with Timeline Historical Events, which includes multiple colors. Timeline Diversity does have a more ornate frame on the date side, which helps separate that set.
All of my Historical Events were red, with the exception of the one cross-over card (the saxophone, a repeat from the Invention set, which was blue again).
The tin for Diversity shows icons for Inventions (gears), History (a flag), Music (music notes), and whatever the globe one is for, but regardless of the category, all the cards have green years.