Henry Harold Krevor, 78, who served as legal counsel to congressional committees and was director of the Appalachian Regional Commission, died May 31 of a heart ailment at Inova Alexandria Hospital. He lived in Falls Church.

In 1964, when he was chief counsel to the U.S. House Select Subcommittee on Real Property Acquisition, Mr. Krevor wrote a report detailing how highway projects and redevelopment had a disproportionate effect on low-income residents of cities. His study became the basis for legislation calling for compensation of people displaced by urban renewal.

He was associated with the Appalachian Regional Commission -- a federal-state partnership that seeks to provide economic help for people in 13 Appalachian states -- since its founding in 1965. He was the commission's general counsel from 1965 to 1969 and, while in private practice from 1969 to 1978, was its principal legal and legislative adviser. He served as the commission's executive director from 1978 until his retirement in 1980.

Mr. Krevor was a native of Boston. During World War II, he served as a rifleman in the Army's 100th Infantry Division in Europe.

He was awarded the Silver Star as a 19-year-old private first class in 1945 after members of his squad were separated under steady artillery bombardment in the German town of Gross Steinhausen. He climbed from a cellar and made 12 trips through the town to gather his fellow soldiers at a central location, carrying one wounded soldier to safety. Mr. Krevor's awards also include the Bronze Star and the Purple Heart.

He graduated from Boston University law school in 1949 and received a master's degree in law there in 1950.

During the Korean War, he was an officer in the Army's Judge Advocate General's Corps. From 1952 to 1957, he worked in the land acquisition section of the Army Corps of Engineers.

As assistant general counsel and chief of the lands division for the Bureau of Public Roads in the Commerce Department from 1957 to 1961, he helped resolve legal issues associated with acquiring land for the interstate highway system.

After serving as chief counsel for the House Committee on Public Works from 1961 to 1965, Mr. Krevor was Washington counsel of the Education Commission of the States, a consortium of legislators and governors interested in education policy, from 1969 to 1973.

In private practice in the 1970s, he represented people facing eviction as a result of government redevelopment efforts. He also served as a consultant on public works projects to municipal and state governments, as well as the U.S. Senate.

In retirement, Mr. Krevor became a licensed real estate agent. He was a member of Agudas Achim Congregation in Alexandria.

Survivors include his wife of 53 years, June Sherter Krevor of Alexandria; two daughters, Lynne Krevor and Sharon Krevor-Weisbaum, both of Baltimore; a brother, Nathan Krevor of Silver Spring; and seven grandchildren.