I think I found your family tree but it was marked private so I couldn't see what info you don't have.
I also found the Zimmer & Mikesell Family Tree, ancestry.com which contains info about Daniel and his wife along with a bunch of nice pictures. Most larger libraries provide free access to Ancestry.com.
I made the assumption that you're looking for info about when he was mayor in Needles. I'd contact the Needles Regional Museum, 929 Front St., Needles, 760-326-5678. They don't seem to have a web site. Ask for the Curator. Successful Searching!