I often find it rather amazing that I'm actually able to locate where some long lost relatives lived in Lincoln, Nebraska. Sure, some of the addresses no longer exist, some have been torn down and replaced by something else. But, even so, I've had fairly good luck in locating their former residences.
Before a "drive by," I look up the address on the Lancaster County Assessor's web site. You can type in the street number and address and find out if the house still exists. If it does, you can even see a photograph of the residence.
If you are looking for a Lancaster County, Nebraska residence where your long lost relative may have lived, visit the Interlinc web site.