thanks for the 2 replies so far.
The wash/SD cards were one I was most interested about because I didn't know if they were thought of as anything special or impactful prior to the 80's but it seems that you both think they had importance in the history and I should move them up the list
maybe Ill use the most "famous" of these and add the rest of the Sd/Wash as a "grouping"
I was trying to avoid groups, but I am sure one or 2 can represent them.
thx
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