The National Diet Library have allowed artwork in their possession to enter the public domain. The NDL Image Bank has approximately 1900 free to use images such as ukiyo-e prints, photos, books, and magazines. As long as the National Diet Library is credited using NDLイメージバンク, these images can be used for personal and commercial use.
This video demonstrates the process of woodblock printing.
This video explains the printing technique called "kappazuri," which is similar to stencil printing. This video introduces Mori Yoshitoshi, famous for applying this kappazuri technique for his print works.