Doctor Dolittle's post office

My son loves these books Becayse he wants to be doctor Doolittle. However, the books are vaguely problematic in their colonialist bullshit. It was a good opportunity to talk about stuff like that with my son, but I don't relish turning night time reading into a fairly complex conversation every single day. I suspect we will stop reading this series after this one...but did you know there are something like 11 books in this series?!