These books can be found used and are well worth owning, do check libraries for them if you prefer. If you find that the used book prices are very high online, keep checking as they will change.
As of January 2022 Braids: 250 Patterns from Japan, Peru, and Beyond is being offered in PDF form by Taproot Video
Details about both books:
Braids: 250 Patterns from Japan, Peru, and Beyond by Rodrick Owen
Making Kumihimo: Japanese Interlaced Braids by Rodrick Owen
