This academic work on early China has a chapter on the Shanghai museum Yi Jing, among other things, and is free for Kindle:
The Writing System of Scribe Zhou: Evidence from Late Pre-imperial Chinese Manuscripts and Inscriptions (5th-3rd Centuries BCE) (Studies in Manuscript Cultures)
https://www.amazon.com/Writing-Syste...ds=scribe+zhou
The Writing System of Scribe Zhou: Evidence from Late Pre-imperial Chinese Manuscripts and Inscriptions (5th-3rd Centuries BCE) (Studies in Manuscript Cultures)
https://www.amazon.com/Writing-Syste...ds=scribe+zhou