"We arrived at ICU fearful of Dr. Dandy as we had firsthand knowledge of the power of this man. We witnessed residents rotating through the ICU with the same fear," Christine Harward Watts, a registered nurse, told Mr. Smithwick. "We came to realize that this man's bark was far worse than his bite."

Dr. Dandy's irascibility was at times aimed toward hospital administrators.

"Like most great physicians, Dr. Dandy had little appreciation for hospital administrators. When he wanted something done, he wanted it done immediately. He was infamous for calling administrators after 5 p.m. demanding 'to speak to the biggest shot still there,' " said Ms. Watts.

"He was always irritating someone, but his nurses appreciated the outcomes. He was truly a brilliant and powerful man who knew how to get things done," she said.

A former resident of Hunt Club Lane in North Roland Park, Dr. Dandy moved to a Monkton farm that he named Sylvian Fissure, where he built a greenhouse and indulged his passion for growing camellias.

He also filled his fields with varieties of vegetables and boasted of being an organic gardener since the 1930s. He credited his grandfather with teaching him how to grow them.

In his retirement, Dr. Dandy was a docent at the Walters Art Museum for 20 years. An avid bird watcher, he taught schoolchildren at Cylburn Arboretum.

He pursued model railroading — preferring O-gauge Lionel trains. He was a member of the Hamilton Street Club, Elkridge Club and Yeamans Hall Club in South Carolina.

He was a longtime member and former board president of Brown Memorial Woodbrook Presbyterian Church, 6200 N. Charles St., where a memorial service will be held at 11 a.m. Aug. 24.

In addition to his wife of 65 years, Dr. Dandy is survived by two sons, Walter E. Dandy III of Vail, Colo., and John Dandy of Prospect Harbor, Maine; two daughters, Carol Beckley of Austin, Texas, and Nancy Patz of Grand Junction, Colo.; three sisters, Kathleen Gladstone of Wellesley, Mass., Mary Ellen Marmaduke of Portland, Ore., and Margaret Gontrum of Eugene, Ore.; seven grandchildren; and four great-grandchildren.