Donald L Heilemann, the audiovisual director for the National Park Service from 1972 until 1991, died Feb. 7 at a nursing home in Milwaukee. He was 84.

The cause was senile dementia, said his daughter, Tami Heilemann.

In his Park Service career, Mr. Heilemann covered the 1976 Bicentennial observances, presidential inaugurations, Pope John Paul II’s visit to Washington and special events in national parks.

Donald Lewis Heilemann was born in Helenville, Wis. After Army service in the late 1940s, he was a newspaper photographer and television cameraman in Milwaukee. He came to Washington in 1966 and was a cameraman with what then was WTOP-TV before joining the National Park Service.

A former Chantilly resident, he moved to Milwaukee in 2012.

His wife, Caroline Shambeau Heilemann, whom he married in 1959, died in 2007. Survivors include three children, Richard Heilemann of Sherrills Ford, N.C., Todd Heilemann of Atlanta and Tami Heilemann of Oak Hill, Va.; and four grandchildren.

— Bart Barnes