Event: Tarzan puts his inky fingers on a page in his father's diary.
Source: "Six months old," ERB-Tarzan Of The Apes.
Date: September 1, 1873
Event: Lady Alice dies.
Source: "A year to the day after her baby's birth," ERB-Tarzan Of The Apes.
Date: September 2, 1873
Event: The last entry in Clayton's diary. The Englishman is killed by Kerchak and Kala adopts Tarzan.
Source: "The morning following her death," ERB-Tarzan Of The Apes.