As I'm finding with her books, they're really outdated and old-fashioned. The whole time I'm reading her I just keep thinking that they need a new edition and to be modernized and updated. The illustrations are old-fashioned and not great; they're simple and saturated with colors that don't match and there's not a lot of detail.
About half the book was on the Pilgrims and the Native Americans. I kept thinking this should be called The First Thanksgiving since so much of it was on that. Her writing is really simple, with usually one sentence on each page. It feels really inadequate, like so much more could be said. "Sometimes candles are lit" was on one page, and another said "Games are played." I was like is that all?
At one point it was a run-through of things eaten at Thanksgiving and she wrote that turkey is stuffed with breadcrumbs, herbs, and nuts and that doesn't make for great reading for kids who probably don't care to read an ingredient list. Then it was a list of things people do, not all of which apply. Like stickers being put on windows, candles being lit (I've never heard of that custom), and Thanksgiving hymns sung.
There are much better books on the subject and these are just too dated to enjoy, with standard info you've heard a hundred times.