Below are preliminary maps from the datasets we have built. See Project Status for more information. Mortality Records: New Orleans Mortality by Residence 1880. Click image to animate (1880-1915). Overview of New Orleans. Individual mortality in 1915. Mortality by nativity in 1915. Intensity of black mortality in 1915. Intensity of white mortality in 1915. Intensity of tuberculosis mortality in 1915. Property Tax Records: Property values by block from city and state tax ledgers in 1885.