Brenz, M. (1972). The care of poor people in Philadelphia from colonial times to 1971: An annotated bibliography. Harrisburg, Pa.: Commonwealth of Pennsylvania, Dept. of Public Welfare.

Brenz, Mary. The Care of Poor People in Philadelphia From Colonial Times to 1971: An Annotated Bibliography. Harrisburg, Pa.: Commonwealth of Pennsylvania, Dept. of Public Welfare, 1972.

Brenz, Mary. The Care of Poor People in Philadelphia From Colonial Times to 1971: An Annotated Bibliography. Harrisburg, Pa.: Commonwealth of Pennsylvania, Dept. of Public Welfare, 1972.