Back in 2013 I put together a new version of the Blethen Genealogy, which is in the public domain. This reformatted and reset version is a fairly faithful reproduction of the original. The Blethen Genealogy takes the family back to the New England colonies and to Wales.
While I do have some questions about the veracity of some of the lineages, it is an interesting read.
My 2013 version is available on Lulu.com, just follow the link below: