TUSC maintains a wide range of materials related to the regional built environment, with the Southeastern Architectural Archive (SEAA) serving as its specialized collection for the history of architecture in Louisiana and New Orleans.
Established in 1979, SEAA's collection spans nearly 200 years and includes professional records that document Louisiana, metropolitan New Orleans, and selected areas of the Gulf South. The archive features works by notable architects such as James Gallier and Henry Howard, who influenced the antebellum city; James Freret and Thomas Sully from the late 19th century; and modernist contributions from Curtis and Davis, Freret and Wolf, James Lamantia, and other New Orleans architects who transformed the scale and style of the city's architecture.