CHIKUMA, Nagano Prefecture A newly discovered letter written by feudal warlord Takeda Shingen during famous 16th-century battles against rival Uesugi Kenshin prompted a museum here to mount a fund-raising campaign to acquire it.
NAGANO Hand-copied versions of part of “Bansenshukai,” one of the three major ninjutsu (ninja art) strategy books, were recently discovered at the Sanada Treasures Museum here, leading researchers to ponder how they made it this far afield.