Walter Carson Simmons, 94, a pharmacist and drug store owner here for more than 50 years, died of cancer Tuesday at the Manor Care nursing home in Wheaton. He lived in Washington.

Dr. Simmons operated his third business venture, an old-fashioned drugstore that featured penny candy, at 21st and L Streets NW for 38 years before retiring in 1963.

A native Washingtonian, he graduated from the old M Street High School here and received a scholarship to the Howard University College of Pharmacy, where he earned a degree in pharmacy in 1909.

The following year, he opened a drug store at 20th and K Streets NW. In 1915, he changed locations to the northwest corner of 21st and L Streets NW. Ten years later, he moved across the intersection to the southwest corner of 21st and L, remaining there until his retirement.

Proud of the old-fashioned nature of the drugstore, Dr. Simmons said in an interview with The Washington Post on his retirement: "I never modernized in because then I'd have to hamper the children. I didn't want to do that. I can remember when penny candy was my biggest seller."

Dr. Simmons was a past master of the Widows Son Masonic Lodge here and a former officer of the local pharmacist's association. He also was a member of the Pathfinders Club, the Spartan Civic Club and the Stevens School Parent-Teacher Association.

His wife, the former Katherine M. Kennedy, died in 1976.

Survivors include a stepdaughter, Bettie Michaux of New York City, and a stepson, James Kennedy of Rockville.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society.