The Couple to Couple League, a part of the Catholic Church, does endorse the
Lactational Amenorrhea method of (I hesitate to say birth control, as that's
taboo) naturally spacing children.  I have some of their information here
somewhere......they spoke at a state LLL conference I attended a few years
ago.

Margie in WPB, FL, where we are mourning the loss of our Governer, a
breastfeeding advocate.