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@mrsforest: For #mathphoto17 this week: old switch board with #array if switches! At Blackberry Farm @FoxValleyParks https://t.co/rtKsvVqe7U | by tads2

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@mrsforest: For #mathphoto17 this week: old switch board with #array if switches! At Blackberry Farm @FoxValleyParks https://t.co/rtKsvVqe7U

For #mathphoto17 this week: old switch board with #array if switches! At Blackberry Farm @FoxValleyParks t.co/rtKsvVqe7U - @mrsforest

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Uploaded on July 17, 2017