"Leftwich's Grant is the second volume in a series that is intended to document the colonization of an area in Central Texas that eventually became known as Robertson's Colony." It covers "the three years that [Robert] Leftwich spent in Mexico City and Saltillo" and includes "a complete account of his official negotiations with both the national government in Mexico City and the state government of Coahuila and Texas. It also includes documents concerning Dr. Felix Robertson, President of the Texas Association, and the group of young men who came to Texas with him in the fall of 1825 to explore the grant and survey land for the stockholders" (p. 11). The index begins on page 667.

The Texas State Historical Association Quarterly Report includes "Papers read at the meetings of the Association, and such other contributions as may be accepted by the Committee" (volume 1, number 1). These include historical sketches, biographical material, personal accounts, and other research. Index is located at the end of the volume starting on page 493.

The genetic structure of 26 natural populations of three species (S. tridecemlineatus, S. mexicanus, and S. spilosoma) of the Ictidomys subgenus of ground squirrels was analyzed using chromosomal and electrophoretic techniques. Chromosomal variation was not observed in S. mexicanus, and only slight karyotypic variation was found in the other two species. Chromosomal evidence indicated hybridization between S. tridecemlineatus and S. mexicanus, placing these species within the classical definition of semispecies. Analysis of electrophoretic variation at 29 genetic loci indicated close genetic relationships between these species. Evolution in Ictidomys appears to be linked with Pleistocene events, and speciation appears to have occurred within the last 155,000 years.

Research paper written by Christy Baeza about her ancestors in Mexico. It covers the interesting story about the birth and life of Manuela Baeza. It includes family trees for the Baeza family and the Love family. This paper was written for an American History class at Marfa High School in 1975.

Annual journal of the Texas Archeological Society documenting research and findings of members as well as activities of the organization.