"...An extensive study of the [real estate] properties within the French Quarter referencing essential historical, architectural, legal and sociological data on individual lots and structures from the French colonial period to the present."
The New Orleans Times-Picayune is a great starting place because it has been in continuous publication since 1837 (under a few different names).
Note that there are two different databases: one for the older coverage 1837-2002, and one for more contemporary coverage 1989-present.
Located on the third floor of the Monroe Library, Special Collections and Archives preserves materials related to the history of Louisiana and the South, the Society of Jesus, and Loyola University New Orleans. Materials must be used in the Reading Room. Please contact archives@loyno.edu for more information or to schedule an appointment.