Does that address even exist any more? I would not think so given that area. Contact George Roseland - I am sure he knows something.
The part that is weird is that it says "northeast 14th St.". The way Omaha streets are labeled is (typically) name steets run east / west and number streets run north / south. So, now at least, it would just be "north" 14th St. Looking up that address it is a residential neighborhood near Carter Lake and the airport.
Okay, looking at the map I guess I just learned something. There are a couple streets right by the airport that are east of what would be 1st street and are labeled like "5112 N. 14th St. E." which also appears to be a residential neighborhood. I've lived in Omaha my entire life and never knew that.