Although there seems to be much history about a Robert Henry Bliven of Ohio and Missouri, nothing has been found on E. H. Bliven.
Long after the cabinet card era, in 1949-1958 there was a photographer in Omaha, NB, Alert L. Bliven and wife Isabel K. Bliven. This tree was followed back and no siblings or cousins were found with the initials E. H. Bliven.
Not the one you were looking for? Here's the photographer's INDEX by name. Listed here are all the Cabinet Card photographers of the 19th century found in LOST GALLERY. This is a work in progress. For a look at the original postings go to LOST GALLERY.