In 1881, Louis P. Robertson purchased the undertaking department from Fakes & Co. Furniture, thereby establishing L. P. Robertson Undertaker.
In the early 1900's, Robertson took on a partner Fred P. Mueller and the name was changed to Robertson & Mueller Funeral Co. and was located at Tenth & Taylor, downtown. E. C. Harper joined the Fort Worth business in 1921, purchasing Mr. Robertson's interests in 1927.
Harper and Mueller moved the company, Robertson Mueller Harper Funeral Directors, from its downtown location in 1929 to a "state of the art" facility at Pennsylvania and Ballinger Avenues. The pair were joined by their sons, E. C. Harper, Jr. and Louis P. Mueller. The Mueller interests were purchased by the Harper family in 1947, becoming sole owners of the funeral company. The home moved to its present location at 1500 Eighth Avenue in 1955.