Dorothy C. Malamut, 60, who was past director of the American Red Cross's national rare donor registry in Rockville, died of kidney disease Sept. 4 at the Hospice of Northern Virginia.

Mrs. Malamut had worked for blood banks in New York hospitals before joining the American Red Cross in 1974. As director of the registry at the national reference laboratories in Rockville, she fielded calls from Red Cross chapters searching for specific blood types and helped them find matches.

A Springfield resident, she was born in White Plains, N.Y., and raised in Scarsdale, N.Y. She graduated with a degree in biology from Newton College of the Sacred Heart in Boston and took graduate courses at New York University.

In retirement, she worked for Welcome Wagon, a greeting service for new Springfield residents. Earlier this year, she started her own similar business, called Hi Neighbor.

She also was a foster parent and active as a volunteer for the Republican candidates in political campaigns.

Her marriage to Bernard G. Malamut ended in divorce.

Survivors include a son, B.G. Malamut Jr. of Dallas; three stepchildren, Mark Malamut of Laguna Niguel, Calif., Sandra Malamut of Leesburg and Eileen Barrett of Alexandria; six grandchildren; two brothers; and two sisters.