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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.
1868. University of Chicago Library. Manuscript maps showing the distribution of ethnic groups and Presbyterian churches in Chicago, 1868-1940. The manuscript title is "The effects of ...