lindahall: Mary Watson Whitney – Scientist of the DayMary Watson Whitney, an American astronomer,
lindahall: Mary Watson Whitney – Scientist of the Day Mary Watson Whitney, an American astronomer, was born Sep. 11, 1847. (read more…) -- source link
lindahall: Mary Watson Whitney – Scientist of the Day Mary Watson Whitney, an American astronomer, was born Sep. 11, 1847. (read more…) -- source link