Here are entered works on mothers who have voluntarily or involuntarily relinquished custody of their natural born children after having kept them for a period of time after birth.
Here are entered works on mothers who are single for various reasons. Works limited to mothers not married at the time of the birth of their children are entered under Unmarried mothers.
Here are entered works on the social conditions of mothers apart from their workplace and on how work affects the quality of life of mothers. Works on working mothers of specific ethnic groups are assigned an additional subject heading of the type Afro-American women--Employment; Women, Black--Employment; etc. Works on the conditions of employment of mothers are entered under Mothers--Employment.