M. Pearl McCall, 100, the first woman prosecutor to serve in the U.S. Attorney's Office here, died Sunday at the Mar-Salle Nursing Home after a stroke.

She was appointed an assistant U.S. attorney in 1921, and held that position until resigning in 1934, when she entered private law practice here.

Miss McCall retired in 1963, but remained active in a number of organizations until she was incapacitated by a fall in 1970.

As an assistant U.S. attorney, Miss McCall was responsible for handling cases involving women and girls as plaintiffs and defendants and for postal law and food anddrug act violations.

She played a key role in bringing about the Diploma Mills Bill, requiring registration and strict standards to be met by organizations conferring degrees.

Born in Greenville, Ky., Miss McCall grew up on a farm nearFarifield, 111. She graduated from Haywood College and attended the Cincinnati Conservatory of Music and Wilson College. She taught school and piano in North Dakota, attended the University of Seattle in Washington and taught school in Idaho.

Miss McCall came to Washington about 1910. While working on Capitol Hill, she attended Strayer Business School and George Washington University.

She went on to study at the old Washington College of Law, receiving a bachelor's degree there in 1918, when she was admitted to the D.C. Bar, and a master's degree in 1921.

Miss McCall was a former member of the General Council of the American Bar Association and former president of the D.C. Women's Bar Association. She was admitted to practice before the U.S. Supreme Court.

Active in the women's suffrage movement, she had been a member of the Women's City Club and the Republican National Committee's speaker bureau.

There are no immediate survivors.