As for koan books, I haven't read any, but looking through a telegram channel I'm in, here are a couple:
"The Record of Empty Hall: One Hundred Classic Koans" by Xutang Zhiyu
"The Crow Flies Backwards and Other New Zen Koans" by Ross Bolleter
As for koan books, I haven't read any, but looking through a telegram channel I'm in, here are a couple:
"The Record of Empty Hall: One Hundred Classic Koans" by Xutang Zhiyu
"The Crow Flies Backwards and Other New Zen Koans" by Ross Bolleter