Oh oh oh - I just thought of another one that I LOVED at that age - how about the James Herriot books, beginning with All Creatures Great and Small. Lovely writing, some sad parts where animals die (he's a vet), but lots of funny and happy parts, too. And I'm pretty sure there's nothing even remotely racy or violent.

There are also lots of short story compilations, but I think the books themselves paint a fuller picture.