The retconned 20s Arkham History Timeline

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1756 CE

15 April

Founding of Arkham
Founding

City founded by George Arkham

Location
Arkham
1875 CE

20 April

Miskatonic University Founded
Founding

Miskatonic University founded.

Location
Arkham

More reading
Miskatonic University
1925 CE

21 August 19:00

Myer's Hill Massacre
Disaster / Destruction

A chapter of the cult of the Yellow King sacrificed themselves, as well as three former members, to summon the Aspect of the Yellow King. Was stopped by David Randall when he read a passage from the Necronomicon .

Location
Arkham

Additional timelines

History of the Arcane
1926 CE

1 January

1926 CE

1 January 18:00

Mask's Takeover of Arkham Underworld
Revolution

Dorothy "Mask" Lozono's city-wide takeover of the underworld, killing off most major members of other crime families and establishing the Lozono Family as the sole family.

Arkham History