Deletion of Ehrman Mitchell

Comment: I think GNG (and possibly ) is met.  https://books.google.com/books?id=Jh7ecV24_uAC&pg=PA637&lpg=PA637&dq=Ehrman+B.+Mitchell&source=bl&ots=q3pfJAsqdW&sig=kmZ5RcKLV0ovzpkPB8N40CT1YZA&hl=en&sa=X&ved=0ahUKEwiPnIeU5b7YAhWC6oMKHdu_DjY4ChDoAQgqMAE#v=onepage&q=Ehrman%20B.%20Mitchell&f=false (from the Almanac of Architecture & Design, which I can't vouch for), http://pcad.lib.washington.edu/person/987/ (Pacific Coast Architecture Database, which isn't user-generated but does include "relatively unknown and unhearlded designers"), and https://www.nps.gov/parkhistory/online_books/allaback/vc2a.htm (National Park Service bio) are all significant coverage
Stance: keep
Cited policy: Wikipedia:Notability (WP:ANYBIO)