Ralph Roerdomp, 46 (head, married, Holland)
Margaret Roerdomp, 43 (wife, married, Holland)
Cornelius Roerdomp, 14 (son, single, New Jersey)
Ralph Roerdomp, 12 (son, single, Washington)
Francis Roerdomp, 7 (son, single, New Jersey)
Luberta Roerdomp, 5 (daughter, single, New Jersey)
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K4TY-9YR : accessed 08 May 2014), Luberta Roerdomp in household of Ralph Roerdomp, Ward 2, Passaic, Passaic City, Passaic, New Jersey, United States; citing enumeration district (ED) 16-102, sheet 2B, family 53, NARA digital publication of T627, roll 2377.