Here's two books my boys have been reading in which the authors mention
breastfeeding (in a normal natural way!):
Knitwits by William Taylor
ages 9-13
"Alice Pepper is going to build our baby a tree house. 'She'll need somwhere
to get away from you, and she and me can have our talks up there....That
treehouse is just for the baby and me....'    'You'll have to let mum up,' I
said. 'Unless you can breast-feed a baby, Alice Pepper, and I know you can't
do that because you haven't got any boobs.'"

Jacob Have I Loved by Katherine Paterson (winner of the Newberry Medal for
the most distinguished contribution to American Literature for Children) ages
10 and up
"I...held her mouth to catch the milk, which began to flow of its own accord.
A perfect tongue, smaller than a newborn kitten's, reached out for the drops
of milk on her lips.  Then the little mouth rooted against my breast until
she had found the nipple for herself."

They enjoyed the books, now I'm reading them! Would it be appropriate to have
my kids write a book report for Lactnet?

Pearl Shifer, IBCLC, LLLL