As the title suggests it is about uniforms in the Swedish cavalry; to be exact from the 17th century until the early 20th. The text is both in English and Swedish. There is a lot of pictures, but it is only original drawings from the same time as the uniforms. Some of the pictures are good, many not.
But it is still a very good source book because it covers very much and it is very cheap (150kr).
This is just part one, part two will be about the infantry and book three about artillery and more modern uniforms (m/10 and younger).