This unpublished poem from Clark Ashton Smith (CAS) exists as a manuscript in the John Hay Library at Brown University, and has a notation of "unfinished" written on the bottom of the manuscript.
The irremeable doors of clay;
Debarred from earth, to space exposed
The spirit took her outward way.
Although much of the diction in this poem feels strained, it's a fascinating idea to trace the path of a spirit emerging after the death of a physical being in a journey to "The portals of the place divine."
I don't know when CAS wrote this poem, but it certainly feels like a early effort akin to the work that led up to his first published volume of poetry (The Star-Treader and Other Poems). In reading "Ballad of a Lost Soul", I can't help but recall CAS' later epic poem "The Hashish Eater, or The Apocalypse of Evil", which traces a similar journey of cosmic proportions, although following a much less conventional course!