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I don't know if there's a reading order. It seems like each story is its own.
But you could go to affect3d and click on Hibbli3D's works and look at the dates on them.
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There is kind of 'reading order'.. Stories are like one chapter in long story arch, yes, all of those are connected one way or another.. And yeah.. good point. Easiest way to find out 'correct order' is look the dates of those sets.. While who cares anymore old 'classic' Knight Elayne stories.