Dolores Dignam Morgan, 67, a former special assistant to the commissioner in the bureau of government financial operations of the Treasury Department died Tuesday at Suburban Hospital in Bethesda of a lung ailment.

Mrs. Morgan who lived in Chevy Chase, began her government career in 1933 in the U.S. Treasury office in Portiani Morne. She transferred to Washington in 1941, and became a personnel officer in the department's bureau of account. She then was promoted to social assistant to the commissioner in the government financial operations bureau.

For her work, Mrs. Morgan received Treasury's Merritorious Service Award in 1968, and its Exceptional Service Award in 1971.

Mrs. Morgan was born in Waterville, Marine and graduated from Colby College.

She was a member of the Shrine of Le Most Blessed Sacrement Parish in Washington.

Survivors include a son, Dr. Charles D. Morgan, of Hanover. [WORD ILLEGIBLE] three sisters, Mary D. Murphy, of Augusta, Maine, Alice D. Grady, of New Orleans and Ellen B. Downing, of Washington. Two brothers, Walter L. Diguern, of Winchester, Mass., and Charles L. Dignam of Wellesley Hills,Mass., and one grandson.

The family suggests that expressions of sympathy be in the form of contributions to Colby College, Waterville for the Dignam Room in the science building.