Adding the images to the Infancy Gospel pages was such a pleasure! I couldn't find actual illustrations for all the episodes, but there was still plenty of wonderful artwork to use. Here are some good ones:
This beautiful painting by Perugino of the marriage of Mary and Joseph works nicely for the story about how Joseph was chosen to be Mary's husband (a story not in the Bible, but in the Gospel of James):
This 14th-century nativity scene shows the midwife who will wash the baby Jesus; the midwife does not appear in the Bible, but she is an important part of the extra-Biblical nativity narratives!
Here's another depiction of the midwife: