Are you perhaps old enough to remember when colored lines would appear on television before the day's broadcast begin? It's hard to believe that I am... But one of today's photos reminded me of that. The other more closely resembles a pH or litmus test. I seem to remember doing some of those in high school biology. (Please tell me they still do those in high school and somebody knows what I'm talking about. How old have I become?) Anyway, for some reason these photos, again from the archive, caught my eye and I thought I'd share.
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