William “Rad” Radlinski, 91, former associate director of the U.S. Geological Survey, died Feb. 15 at Inova Loudoun Hospital in Leesburg of pneumonia.

His son Richard Radlinski confirmed the death.

Mr. Radlinski joined the USGS staff after his graduation in 1949 from what is now Hofstra University in Hempstead, N.Y. He retired in 1979 after 10 years as associate director, two years of which he was acting director.

In 1963, a 9,200-foot mountain in Antarctica was named in his honor by the Board of Geographic Names, an arm of USGS.

William Anthony Radlinski was born in Salamanca, N.Y. He served in the Army in Europe during World War II and participated in the Battle of the Bulge. He remained in the Army Reserve after the war, retiring as a lieutenant colonel in 1981. He did postgraduate study in astronomy at Georgetown University.

He was a former president of the American Society for Photogrammetry and Remote Sensing and the International Federation of Surveyors. For five years after his federal retirement, he was executive director of the American Congress on Surveying and Mapping.

He was a member of the Cosmos Club.

A former Herndon resident, he had lived at Falcons Landing, a retirement community in Potomac Falls for the past 15 years.

His wife of 69 years, Theresa Harmuth Radlinski, died in 2011. Survivors include two sons, Richard Radlinski of Queenstown, Md., and Robert Radlinski of Bethesda; three grandchildren; and seven great-grandchildren.

— Bart Barnes