The Frank and Carol Holcomb Map Collection consists primarily of Texas maps spanning from 1513 to 1904. With an emphasis on color and rarity, the maps are both art and historical images. All maps in the collection include the area that would become Texas, whether part of an undefined frontier on the North American continent, or the current boundaries. This exhibition focuses on landmark maps of Texas from 1646 to 1874, with the bulk of material showing the explosive growth of the region from 1830 to 1851, when Texas sovereignty changed three times in only 21 years.

In 2014, the Holcomb Collection was digitized by the Texas General Land Office with the intent that the collection be made available to the public.