Confessions of a Five-Chambered Heart

From Author Wars - https://authorwars.com/publications/confessions-of-a-five-chambered-heart-374747.html

Overview:

Title: Confessions of a Five-Chambered Heart
Author: Caitlín R. Kiernan
Year: 2012
ISBN-10: 9781596064737
Publisher: Subterranean Press
Price: $40.00
Pages: 327
Binding: Hardcover
Type: Collection
Title Reference: Flotsam
Notes: Cloth bound trade hardcover edition. Also announced was a Limited edition of 600 signed numbered leatherbound copies, including the bonus hardcover collection, The Yellow Book for $60.00
Publication date from Amazon US; it roughly corresponds to the date on which copies of the book began shipping from the publisher.
"I am the Abyss, and I am Light" is listed as "I am the Abyss and I am the Light" in the table of contents, but as listed at the head of the story.