Yes, that's the couple, I also have Carl's WWII Draft Registration from 1942 but that's where the trail ends.

The grandson, William, attended Bogota HS in the 1950's and is buried in New Jersey; I suspect the grandparents stayed in NJ until their deaths also.

Carl and Anna also had two daughters but, without marriage info, can't find them either. That's why I've been looking for vital records indexes for both death and marriage.