In 1951, a 27 year old man by the name of Ray L. Stump started up his own sawmill business, which he named Ray L. Stump Lumber Co. Working side by side Ray were his brother-in-law, Samuel Fenstamacher, and longtime friend, Lester Leffler. This sawmill was a bit different than the one Stump Bros. uses today because this sawmill was known as a "traveling sawmill." The workers at Ray L. Stump Lumber would buy a stretch of timber from a landowner, and from there, they would move the sawmill (they took it apart, and then put it back together at the job site) to the stretch of timber. The workers would then cut down the timber and saw it into useful pieces of lumber. Once they were finished with the job at a certain stretch of timber, Stump, Fenstamacher, and Leffler would then move the sawmill to another location. Ray L. Stump Lumber Co. worked in this manner from 1951 to 1971.

However, in 1972, the sawmill was moved to a permanent location, due to insurance purposes. Now, the Lumber Co. purchased logs from private loggers, and from there, the workers would saw the logs into lumber. One of the chief suppliers of logs for the Ray L. Stump Lumber Co. was D.A. Wolfe Forestry, located in Ravine, PA. In 1972, the workers were Ray Stump, his son Ronald, Sam Fenstamacher, Lester Leffler, and Joe Miller. Toward the end of 1972 fiscal year, Mr. Miller retired from the Lumber Co. after 15 years of dedicated service.

As the Lumber Co. entered the 1980's, the sawmill kept up with changing technology by purchasing new equipment, like chainsaws, a "sawing power unit," and a "flat bed" truck. With the new equipment, the Lumber Co. continued to do well in serving families and businesses throughout the area. In 1986, after 35 years of hard work and dedication, Samuel Fenstamacher retired from the business. After his retirement, it was Ray, his sons Ronald and Terry, and Lester Leffler working at the mill.

Two years later after starting up the business some 37 years earlier, Ray L. Stump retired. Before he retired, his sons, Ronald and Terry, met with him and together, they bought the family sawmill business from him. Shortly after buying the sawmill from their father, Ronald and Terry renamed the sawmill and the entire business as the Stump Bros. Lumber Co.

In October of 1996, Lester Leffler retired from the business. Upon his retirement, Mr. Leffler was 70 years old, showing that he truly was an iron man who was dedicated to the Stump family and to the sawmill business. He worked at the sawmill for 45 years. Nine months after Leffler's retirement, Theodore E. Dreisbach was hired by Stump Bros. to fill the void that Leffler left behind. Ted put in two strong years of dedicated work to Stump Bros. before also retiring.

During the summer months (June-August) since the year 2000, Ronald's eldest son, Ron Jr., joins the Stump Bros. at the mill and continues to uphold the family "sawing" tradition. Ron, Jr. is the third generation of Stumps involved in this family lumber company. Currently in the 21st century, Ronald and Terry continue to work side by side at the mill, producing the finest lumber products that money can buy.