I couldn't be more delighted to see that my recent book, titled Frank Lloyd Wright and Mason City: Architectural Heart of the Prairie, is currently being offered as a free donation bonus in the fundraising campaign on Iowa PBS. It is featured in two donation options online here and here.
I think it's a pretty good overview of the influence of European and Japanese traditions on Wright's architectural style (and vice versa), as well as an explanation of why Mason City's architecture is of genuine significance. There is a shortage of serious writing about the importance of things that surround us.