The grandfather who came over, and his wife whose parents came over right before she was born, connect me to the awesomely easy to use genlias.nl. The grandfather who never lived in the US was a Kleine Gemeinde Mennonite (or at least born one) and thus connects me to a massive genealogical community I was aware of an am increasingly familiar with (for what it's worth, I and my youngest sister, even, made it in before compilation closed on Aron C. Toews' Family register in 1972).
And then there's the American mutt.
The recently-American (hey, Canada is not part of the US but it is part of America) genealogy research is qualitatively different from American-for-generations in some ways and exactly the same in others. In any event, things have tended to work best with the mutt when I can build up enough information to be certain of a connection to a reliable genealogical work, and then use that to build a connection to another reliable genealogical work, etc. This is different from the Mennonites, in that I already have the reliable connection handed to me with the Mennonites. It is different from the Dutch work because I have online access to almost 200 years worth of vital statistics records through genlias.nl.
I was amused to realize the other day that I probably could satisfy DAR's requirements for membership. Today I have discovered that I _definitely_ have an ancestor in DAR's records. And I finally have some really-for-sure German ancestors in my tree (there were some in R.'s, but not in mine until today). Some seriously awesome genealogy work done on the Plantz family can be found here:
My maternal grandmother's mother's maiden name was Plantz. (The Veeders turned out, unsurprisingly, to have come from the Netherlands, altho it's entirely possible they were French Huguenots before that.)