Harry Evans Proctor, 73, a retired lawyer who represented the National Association of Savings Banks in Washington for many years, died of cancer Wednesday at Arlington Hospital.

Mr. Proctor began his legal career in the 1930s as an attorney for the Department of Agriculture in New Haven, Conn. He transferred to Washington about 1938, and during World War II joined the Treasury Department.

In the late 1940s, he went into private practice with the firm of Oliver & Donnelly. His full-time job was representing the savings banks association, and he did so until his retirement in the early 1960s.

Mr. Proctor was born in Wilmington, Del. He attended Princeton University and earned a law degree at the University of Virginia.

He was a member of St. Andrew's Episcopal Church in Arlington.

Survivors include his wife, Margaret W., of the home in Arlington; a son, Ernest W., also of Arlington; three daughers, Sarah P. Braman, of Burton, S.C., Page P. Hagan, of Arlington, and Mary P. Fedewa, of East Lansing, Mich., and 13 grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to St. George's Chapel, c/o the Rev. Richard Bailey, All Saints Episcopal Church, Rehoboth Beach, Del.