House Number Doesn't Exist in County Records? Now What?

[Bernie D.]

I'm new at this.  I'm interested in bidding on a property currently listing in a tax sale, however, it only shows the parcel number and street name.  There is no street number attached to the tax documents.  When I try to search the past history (using the county's tax and recorders online record database) I can't find anything about the home (other than the last owner's name).  The home was built in 1900.  Any thoughts?  What else can I do to research?