Edna Voorhees, 55, a secretary in the Capitol Hill offices of members of the House of Representatives since 1965 and a lifelong resident of Prince George's County, died of cancer Saturday in her home in Landover Hills.

She joined the office of Rep. Robert Duncan (D-Ore.) in 1965, then worked for the late Jerry Pettis (R-Calif.) before becoming a secretary in the office of Rep. John Blatnik (D-Minn.) in 1970. Since 1975, Mrs. Voorhees had worked for Blatnik's successor, Rep. James L. Oberstar (D-Minn.).

Mrs. Voorhees was born in Forestville and had been active in Prince George's County bowling leagues.

Survivors include her husband, Fred, of Landover Hills; seven daughters, Sandy Rinck of Lanham, Joyce Voorhees of Cheverly, Gloria Rubin of Olney, Linda McLaughlin of Seabrook, Brenda Jett of Davidsonville, Md., Janet Lombardo of Baden, Md., and Diana Harmon of Golden Beach, Md.; a son, Ricky, of Landover Hills; three sisters, Betty Shupp of Seabrook, Ruth Dean of Columbus, Ga., and Margaret Moore of Lothian, Md.; two brothers, Bob Flowers of Upper Marlboro, and Isham Flowers of Sioux Falls, S.D.; two half-brothers, Edwin Scott of Columbus, Ga., and Dempsey Scott of Baltimore, and 14 grandchildren.