C. Harrison (Hank) Mann, 69, an Arlington attorney and a former state delegate to the Virginia General Assembly, died of cancer Monday at his home in Arlington.

Mr. Mann, who served eight terms, from 1954 to 1970, as the Democratic delegate from Arlington County, sponsored legislation to ban obscene literature, to provide statewide driver education, and medical assistance for the aged. He was also responsible for creating an educational financial assistance program for Virginia college students and for amending Virginia's constitution so that state funds would be available for construction of public schools.

In 1964, he successfully challenged the state legislature's allotment of representation to Northern Virginia. His case was one of four on which the Supreme Court based its historic one-man, one-vote edict. That year the courts ordered an increase of from six to 11 delegates for Fairfax and Arlington counties and from three to four senators for Fairfax, Arlington and Falls Church.

In a attempt to keep the "crooks out" as he put it, Mr. Mann headed the Virginia Committee to preserve the Virginia Committee to Preserve Clean Govenment and fought to keep the legalization of parimutuel wagering on horse racing out of the state. He once said. "I'm not concerned about the honesty of the parimutuel window, but rather the riffraff and organized criminal activity that follows in its wake."

His view was that. "Apparently many environmentalists haven't discovered that people too are part of the environment and that their needs are paramount to other factors like trees, squirrels' homes, flyways for migrating birds and stufflike that."

In addition to his other legislation, he sponsored a bill that created the original George Mason College.

Mr. Mann has served as chairman of the Virginia Highway Traffic Safety Study Commission and was the founding president of the Arlington Historical Society. He was active in the American Legion. Veterans of Foreign Wars, and the Virginia, District of Columbia and Supreme Court basrs. In 1973, he was chairman of the Virginia fund crusade for the American Cancer Society.

Born in Mobile, Ala., Mr. Mann had lived in Arlington for 40 years. He received his law degree from the University of Virginia in 1931.

Survivors include his wife, Betty, of the home in Arlington: two daughters, Betty Gates, of Alexandria, and Patrica Crenshaw, of Annandale; his brother, Gamble, of Edgewater, Md.; and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the George Mason University Foundation for theHarrison Mann Law Collection, of George Mason University Library.