Alexa has found images that she finds representative of various blogs. Here is the one she found for me.
I like it. Not very midwifey, and that is OK. Below is an image I found and was considering using to replace my other Maria Lactans pic. It is the Madonna of the Green Cushion, found in the Louvre, and is the frontispiece for the book Mother and Infant by Fr. Wm. Virtue.