The collection consists of materials relating to his work with research and production of small grains such as wheat, oats, and flax, and in particular the development of Hope Wheat. In addition, the collection contains biographical information about McFadden and his writings and speeches.

Valley Experiment Station of the Texas Agricultural Experiment Station news release on the release of Sea Breeze, a new type of wheat. This wheat was developed by the Texas Experiment Station in cooperation with the U.S. Department of Agriculture to meet the needs for a forage typed of small grain that might be used as poultry feed; or as pasturage; or hay or ensilage for other kinds of livestock.