Eloise Douglas Graham, 75, a former administrative officer in Montgomery County, died of leukemia Aug. 14 in Santa Barbara, Calif, where she had lived for five years.

In the 1950s, Mrs. Graham was an administrative assistant to the county manager and handled matters for the Bethesda, Chevy Chase and Glenn Echo areas. Earlier, she had done secretarial work for a number of county officials.

Mrs. Graham was born in Hagerstown, Md. She was a graduate of Holton Arms School in Washington. During the 1930s, she reported on Montgomery County affairs for The Washington Post.

A resident of the Bethesda-Chevy Chase area from 1920 until 1975, she had been active in many community and church affairs. She was a former president of the Ladies Auxiliary of the Veterans of World War I, Department of Maryland, and the Ladies Auxiliary of Frank Pelham Stone Post 173 of the American Legion.

Her first husband, George Emlen Graham, a physicist with the National Bureau of Standards, died in 1967. She married his brother, John DuPuy Graham, a retired stockbroker, in 1975.

In addition to her husband, of Santa Barbara, survivors include two sons, George E. of Silver Spring, and William G., of Round Rock, Tex.; her second husband's three stepsons, Lawrence T. Hammett, of Palo Alto, Calif., Benjamin C. Hammett, of Palo Alto, Calif., and G. Ross Graham of Santa Barbara, and 19 grandchildren.