Book
Ancient Buddhism in Japan: Sūtras and Ceremonies in Use in the Seventh and Eighth Centuries A.D. and Their History in Later Times
A two-volume philological-historical reference on the sūtras and ceremonies used in early Japanese Buddhism and their later development, with extensive treatment of esoteric ritual.
Where to find it
- Google Books — Ancient Buddhism in Japan, Vol. 2 (Marinus Willem de Visser, 1935)
- Google Books — Ancient Buddhism in Japan, Vol. 1 (Marinus Willem de Visser, 1935)
- Internet Archive — Ancient Buddhism in Japan, Vol. I (full text, Digital Library of India scan)
- Internet Archive — Ancient Buddhism in Japan: Sūtras and Ceremonies ... and Their History in Later Times (de Visser, full text)