I didn't find a marriage record for either one. I found this, which may help or may be a duplication.
Modesto city directories have Wanda Klaproth as the wife of Zerl B. Klaproth in Modesto in 1948, 1950, 1954, 1956, 1957, 1958. Then the moved to Redding in 1959 and 1960, unless there is another couple named Zerl and Wanda Klaproth.
Wanda served as a polling place judge in Modesto in 1966, 1967, 1968 and 1974, so they moved back.