Mildred Moger Burnham, 91, a resident of the Washington area since 1907 who was active in service organizations, died of congestive heart failure Friday at the Carriage Hill nursing home in Arlington.

Mrs. Burnham was born on a cattle ranch in Kansas. She studied piano and voice at the Landon Conservatory of Music in Dallas, and then moved to Belleville, Kan., where she married Dwight Nutting Burnham.

In 1907, the year of their marriage, the couple moved to Washington, where Mr. Burnham established himself as a certified public accountant. In 1936, they acquired a farm, "Burnham's Wood," near Laytonsville in Montgomery County. They continued to live there until the property was sold in 1957.

During her early years in Washington, Mrs. Burnham was a soloist at several churches. During World War I she was a driver for the Red Cross Motor Corps. She later was active as a driver for the Kiwanis Crippled Children Program.

In the 1920s and 1930s she played in a number of women's golf tournaments in this area and was a member of the Manor Country Club near Norbeck.

Mrs. Burnham also was active in Republican Party groups in Montgomery County.

Mrs. Burnham lived in Bethesda until about 1969, when she moved to the Carriage Hill nursing home in Silver Spring. About a year ago, she moved to the Carriage Hill facility in Arlington.

Her husband died in 1966.

Survivors include a daughter, Mildred Burnham Spottswood of Silver Spring, one granddaughter, and one great-granddaughter.