Found 4 books 
![[Gutenberg 43135] • The Riddle of the Purple Emperor](/cover/b0j4KQGRjjDbQmz_/small/[Gutenberg%2043135]%20%e2%80%a2%20The%20Riddle%20of%20the%20Purple%20Emperor.jpg)
[en] [Gutenberg 43135] • The Riddle of the Purple Emperor Musaicum Books
![[Gutenberg 17180] • The Riddle of the Frozen Flame](/cover/zjFCivNA6uByvgTx/small/[Gutenberg%2017180]%20%e2%80%a2%20The%20Riddle%20of%20the%20Frozen%20Flame.jpg)
[en] [Gutenberg 17180] • The Riddle of the Frozen Flame Musaicum Books
![[Gutenberg 42802] • The Riddle of the Mysterious Light](/cover/f_JlDqaTwEqQXdD4/small/[Gutenberg%2042802]%20%e2%80%a2%20The%20Riddle%20of%20the%20Mysterious%20Light.jpg)
[en] [Gutenberg 42802] • The Riddle of the Mysterious Light Pearl Necklace Books
![[Gutenberg 33279] • The Riddle of the Spinning Wheel](/cover/tfHq7Ed-l1-gGcq5/small/[Gutenberg%2033279]%20%e2%80%a2%20The%20Riddle%20of%20the%20Spinning%20Wheel.jpg)
[en] [Gutenberg 33279] • The Riddle of the Spinning Wheel Kessinger Publishing