The Tax Roll Files folder contains the Appraisal and GIS data at final tax roll for the previous five tax rolls. Over time the file formats have changed as our CAMA (computer aided mass appraisal) and GIS (Geographic Information System) systems have evolved. The changes range from the number of tax roll events (preliminary tax roll to final tax roll) to the number of files for each event. Since the Tax Roll Files information is always evolving we have elected to put the file layouts/data descriptions in the corresponding folders. This documentation is a work in progress that we hope to have completed in 2013.