Mary P. Sullivan, a clerk-typist at DEA's Miami Regional Office, died on August 5, 1974, as a result of the collapse of the office building. She was 56 years of age at the time of her death.

Sullivan began working for DEA in March 1974 as a transcriber clerk. An experienced secretary, she had worked at various offices in New York City for nearly 30 years prior to moving to Miami in 1970. Before joining DEA she worked for the Miami Local Board of the Selective Service System for three years. While with DEA, Sullivan provided invaluable assistance to special agents in conducting their investigations.

Ms. Sullivan was survived by one sister, Dorothy Farrell.

Seven DEA employees died in the collapse of the Miami Office at 10:22 a.m. on August 5, 1974. Investigators determined that poor construction materials significantly contributed to the collapse of the structure.