It's now in the public domain. *hint, hint*
This needs a twelfth volume.
Lent is here.
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This and other books by Chesterton not sold by Faithlife are available in .docx format for building into a Personal Book on this thread:
https://community.logos.com/forums/t/102567.aspx
He provided a .zip file with all of the .docx files in it later on in the thread. And someone else on that thread provided book covers.
Here are the ones I got that way:
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I want the Ignatius Collected Works set.