 The forest was not a separate entity at the time; it was part of the Caribbean National Forest, and was administered by the U.S. Forest Service as the Toro Negro Division of the Caribbean National Forest.Additional lands brought the total size of the Toro Negro purchase that year to , and at least an additional were in the process of being acquired in 1936.Between 1934 and 1945 over 3 million seedlings and approximately 19,000 pounds of seeds were sown on of the forest.