I have just received a notification that the book store in Japan ‘Chokai book store’ now have a stock of ‘Book for Maples - Masayoshi Yano’(used) for 13200yen. (It’s very expensive though).
Great, you have got it now. The Japanese Yen is currently weak against GBP and USD so for Japanese standards, it is a bit pricey
https://www.docdroid.net/7utmHsy/191full-pdf this pdf is a guide to mass propagating virtually any species of maple from seed to grow as fast as possible to a marketable size in one growing season. The example species is Bigtooth Maple (acer grandidentatum)