Seasonal Picture Books Recommendations

I am working on compiling a list of seasonal picture books.  Since we will be in the States this coming year (as opposed to in the tropics – we are missionaries), I hope to sort of focus our nature study observations on seasons and seasonal changes since we will be able to observe them this year, and would love to have ideas of go-along picture books to put in our book basket for each season.   Not necessarily for holidays per se – we have lots of those already – but just general seasonal ideas for winter, spring, summer, and fall. =)  I have a list going already from various sources, but thought I check and see here if any of you all have some favorites to add to the list.

Thanks!