On December 16th, 1946, the Sundial ball that until then sat on the Sundial (2nd…

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On December 16th, 1946, the Sundial ball that until then sat on the Sundial (2nd 📷) was removed due to cracks. Its last known location was Michigan.

1st 📷 @columbia_rbml
2nd 📷 @nypl Digital Archives
by columbiauni.in.pictures