A friend gave me her copy of this book, telling me simply that she loves it, that it's hard to explain, and that it's about polygamy. That *nearly* sums it up for me.
It really is hard to explain, and I'll tell you right off, the summary here on Goodreads is wrong. The main character, Linnea, is not a Swedish immigrant. She is of Swedish heritage, but it is made clear several times in the book that she was born in Utah. She was born into the Church of Jesus Christ of Latter-day Saints, and enters into a polygamist marriage as a second wife.
Polygamy is truly the central theme and a real driving force in this book, but it is not all that it is about. More accurately, I'd say it's about a cheerful, independent mother who is determined to be a kind neighbor and friend, to stand up for what is right and for those who can't stand up for themselves. Linnea spends much of her time, essentially, as a single mother, because her husband Olaf cannot come to see her as often as he would like due to the intense scrutiny by the federal government on the activities of Mormons in the territory of Utah during this time. Olaf had already spent some time in jail for polygamy and did not want to risk being caught visiting multiple households, as providing for his two families was difficult enough without being in jail. The book is set in 1890, which is the year that the LDS Church issued the manifesto ending plural marriage.
Linnea was such a delightful character who worked hard to rear her children. There were so many additional characters and related stories that made this book such a great read. Linnea considers and must think through her circumstances as a polygamous wife as she gradually understands the feelings of the first wife (through talking to other first wives), as she encounters those who look down on the peculiar institution, as she interacts with other women in similar circumstances, and as she teaches her own daughters to respect her choice while discouraging them from making it for themselves.
Motherhood and love are other signficant themes of this book. You cannot read it without getting a glimpse into the real mother heart that Linnea (and many other characters) possessed.
This book was written in the 1940s, which I think is an important piece of information. It definitely affects the style of writing, and I realized that it was written at a time when there were certainly people still alive who may have been reared in polygamous homes. This book may not be for everyone, but I also think there are many who would be surprised at how much they'd like it, especially because it would be easy to pass on it as merely a "book about polygamy."