I know which areas of the city were destroyed, and could circle them with great accuracy on a map.
I know where the Great Fire of 1892 started, how, etc. Stories about wealthy families bringing their art and valuables to the Anglican Cathedral thinking it'd be safe there, but only watching it burn.
Tent cities set up for the homeless in Bannerman Park for the wealthy.
The poor flooding into the former Central Slum where the Cabot buildings and City Hall are today.
Etc.