Bill Fitzgerald reminded me that the first draft of the Common Core ELA standards is findable through the Wayback Machine. I'd been kicking myself over not being able to find a local copy. This should include an active link to the pdf version, which includes the only benchmarking documentation for the standards, although unfortunately all the highly convenient copies of the reference standards are not on the Wayback Machine.
This is particularly useful if you want to understand the motivations of the standard's authors. For example, the idea that the Common Core standards put a new focus on content starts to fall apart when you see that there is nothing about content in the first draft. You can't deny that what content is there was grafted on later.
I'm a little fuzzy on the whole sequence... there was the first draft with only the College and Career Readiness Standards (i.e., the end-of-school standards) and then were there two drafts of the grade level standards? The CCRS were heavily re-arranged but there wasn't a separate final draft of those.