The Visitation — Sue Reidy

The Flynn girls, just two of a seemingly endless number of Flynn children, are naturally curious about where their little siblings come from. Well versed in the bizarre lives and gruesome deaths of their favorite saints, they have yet to crack the mysteries of the more earthly concerns of procreation and human relations. Blessed enlightenment comes, however, when the Virgin Mary appears and asks them to buy her suitable clothes for her earthly mission -- a campaign for birth control.
Set against the backdrop of the impending Vatican II decisions that wreaked havoc on many Catholic lives and the sprawl of the more permissive 1960s, this crackling, smart, and thoughtful novel is sure to delight.