Duncan Insurance Agency was established in 1911 by Mr. T. L. Duncan. Upon his death, the establishment was continued by his son, T. L. “Billy” Duncan, Jr. until 1979 when he passed away. At that time, his widow, Maurine Duncan managed the agency.

Mission Insurance Agency was established in 1927 by a Mr. Wolverton, a retired military officer. In 1952, Orval Elkins, a life solicitor for Mission Insurance Agency, became owner of the agency upon the death of Mr. Wolverton. Mr. Elkins ran the business until 1973, at which time Brad Findley became a full 50% partner of Mission Insurance Agency. In 1975, Orval Elkins sold the remaining 50% to Joe Roseland.

In the summer of 1980, Maurine Duncan sold Duncan Insurance Agency as an equal partnership to Brad Findley and Joe Roseland.

On January 1, 1981, Mission/Duncan Insurance Agency was formed with the merger of Mission Insurance Agency and Duncan Insurance Agency. Mission/Duncan Insurance Agency is located in the Duncan office building at 220 East Tom Landry in Mission, Texas.

On January 1, 1984, Mission/Duncan Insurance Agency was incorporated with Brad Findley and Joe Roseland as the sole stockholders. Each owned 50% of the issued stock.

On September 1, 1989, Mr. Brad Findley sold his 50% of issued stock to Mr. Joe Roseland. Mr. Findley moved to Boerne, Texas and is pursuing a different career field. In May of 1994, Joe Roseland sold shares in the corporation to longtime employees Sara Valdez and Sandra Zamora. They have both successfully completed the requirements for their local recording agents license and are active producers in the agency.