Dear Linda,
Here is their listing in the 1930 census, with their likely step-father.
"United States Census, 1930", database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:XMJZ-BHP : accessed 10 April 2016), Albert M Porter in entry for Amos J Wayman, 1930.
Hope this helps! -NGP