Harry Edgar Tuthill

Info:
p.242 of Alva Tuttle's book, Tuttle-Tuthill Lines In America, shows the following information: Harry was married, but to whom is unknown. He had the following children: 1. Harriet b.?, 1. Donald, 3.Celia.
My research discovered nothing about Harriet, but found Donald Wayne Tuthill was born 24 Nov 1945, Los Angeles, CA and Celia Louise Tuthill was born 24 Nov 1947, Los Angeles, CA. Quite a coincidence Donald and Celia were born in the same month and day 2 years apart. On both Donald and Celia's birth record, it was shown her mother's maiden name was DOW. The name of the father was not stated, however, given the fact that both of those children's name were given in Tuttle's book, I am fairly certain the 2 children--Donald and Celia born in Los Angeles county, CA are 2 of his 3 children.
Further research found a marriage record showing Daris/Doris Louise DOW married Harry TUTHILL 16 Feb 1945, Camp Crowder, Newton Co, Missouri, USA