Seeking information on Zink family

I am searching for information on the following Zink's - they are on my mothers side of the family.Any information or pictures would be most appreciated.The following is the only information I have:
Robert Glenn Zink born Sept 5, 1916 in Aberdeen, Washington
Genevieve Julia Zink born April 5, 1919 in Aberdeen, Washington
Donald Roy Zink born May 7, 1923 in Aberdeen, Washington
Madeline Annabelle Zink born December 28, 1926 in Aberdeen Washington

Any information would be most appreciated.