1861 – Born on the 22nd of November.
1882 – He graduated from Harvard and proceeded to make a professional name for himself in legal and financial circles.
1897 – Putnam’s role in Lowell Observatory’s history begins when Percival Lowell succumbed to severe nervous exhaustion.
1901 – Lowell returned to work, Putnam resumed his role as the financial and legal power behind the Observatory.
1923 – Died in June, aged around 61, during Constance Lowell’s attempt to contest Percival’s will.