Edith May Harr, 90, who spent much of her life caring for an ailing family, died Wednesday at Sligo Gardens Nursing Home in Takoma Park where she had lived since 1971. She had arteriosclerosis.

She was a native of Washington and a graduate of McKinley Tech High School. She was the youngest of five children born to Jesse M. and Annie E. Harr. Miss Harr helped care for two sisters, Emma C. Cooper and Annie V. Harr, both of whom had tuberculosis, until their deaths in 1911 and 1912.

Miss Harr spent the years between 1920 and 1924 in Colorado, where she herself was treated for tuberculosis. She returned to Washington in 1925 and cared for her aging parents. Her father died in 1925 at the age of 78, her mother in 1930 at the age of 80.

Between 1957 and 1967, she lived in Colorado and stayed with an ailing brother, J. Irvin Harr, until his death in 1958. She moved to Silver Spring in 1967.

Miss Harr was a member of Grace United Methodist Church in Takoma Park. She was a past member of Douglas Memorial Methodist Church in Washington and Hughes United Methodist Church in Wheaton. She had belonged to the Order of the Eastern Star.

There are no immediate survivors.