The Year At Maple Hill Farm by Alice and Martin Provensen
In this book, we see animals and life changing through a year on a farm. We learn a little about farming, a little about the seasons, a little about the months of the year, and a little about animals. There's not a plot or story, really, just short descriptions for each month. Many of the spreads have multiple illustrations. On other months, there are large two page spreads full of details.
Frankly, the only thing I don't like about this book is that it's no longer in print in a hardcover edition. We received a paperback version as a gift and are loving it to pieces. Literally.
Alice and Martin Provensen have other wonderful books as well. Be sure to look for them at your library.