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The Texas GeoData Portal has recently been updated to GeoBlacklight 4 to provide new and improved functionality. As a result of this change, some records previously available from other institutions are not currently accessible through the Portal, but additional records will be actively added over time.
1992. University of Chicago Library. This map was current from 1992 until 1998, when litigation forced some boundary changes. This file contains accurate straight lines in some places ...