Pro tip for time travelers to the 60’s: take a marker pen and draw a diagonal line across the top of your card deck, from column 1 on the first card to column 8

Pro tip for time travelers to the 60’s: take a marker pen and draw a diagonal line across the top of your card deck, from column 1 on the first card to column 80 on the last one. It’ll help you sort things out later when you drop it.