This collection contains 26 botany samples and information compiled by Julian Pennybacker, a student at the Agricultural and Mechanical College of Texas. The herbarium was a class project for a Texas A&M College botany class project in 1881 and the samples were collected in the Brazos Valley.

In November 2003, the herbarium was examined by M. D. Reed of the Texas A&M University Biology Department. She made the following note which is attached to the herbarium:

This was a student collection made for a botany class. Pennybacker appears on student rolls of the era.
The book used to identify the plants was probably something by Asa Gray and not meant to cover Texas. Since there was no complete treatment of the Texas flora at the time, this cannot be considered a fault.
When examined in 2003, the specimens were found to be fragmentary, mixed together, and separated from their sheets. To the extent possible, they were identified, remounted, and databased by Monique Dubrule Reed of the Biology Department Herbarium.