So how far can you go
I’ve been revising an essay for publication, that was reviewed without any digital history evidence.  I’ve slowly put some into the footnotes.  My argument is that histories of the women’s movement have privileged certain groups that produced certain sorts of documents recognized by scholars as manifestos. 

These documents, often labeled retrospectively as manifestos, serve as evidence for historians writing about women’s liberation. However historians’ understandings of the genre manifesto is so limited that only a select few are included in most histories.[1] Thus the conventions of the genre of manifesto are crucial to understanding the historiography of women’s liberation.

[1]Although exhaustive survey precluded by space here, recent histories of women’s liberation include

In order to “prove this” it seems like a historiographical footnote would be in order.  However the literature on women’s liberation is voluminoius and not limited to one discipline.  I read a lot, obviously, which is why I feel confident that my assertion that the CWLU, a socialist feminist group that produced many pamphlets that look like manifestos,  is written about more than the FSW, a feminist art group that produced broadsides and other artistic expressions not recognized as manifestos, is true.
And indeed searching google books and n gram backs me up.
using google book advanced search, limited for exact phrase and history as subject and books only reveals about 135 books that mention the Feminist Studio Workshop and 693 books for Chicago women’s liberation union.  Unlimited by subject still reveals,  Feminist Studio Workshop 1940, 2780  Chicago Women’s Liberation Union.  Because I know that CWLU was frequently used instead of the full name I run that too revealing an field-unlimited result of 4,090.
Since according to Jacqueline Rhodes the manifesto of the very short-lived Redstockings is the most anthologized, so I ran the results for comparison. 2700 limited for history, 13, 300 unlimited. 
I then cruised over to Ngram.  Because of serach parameter problems I can’t search Chicago women’s liberation union, but since CWLU is more popular anyway as revealed by the google book search it seems fine to go with that.
Here is the graph from 1967 to 2008 for all three (they need an embed function)

So the question is do I totally forgo the traditional narrative, here in a survey of some recent books sort of footnote for the above evidence?