The request was sent to the "Wrong County". This came to the Lincoln County board which is in the Western part of Nebraska.
The City of Lincoln (and Yankee Hill) is in "Lancaster County" which is in the eastern part of Nebraska. Here's the data on the first message......
Name: Warren Mulock
Birth Date: 1876
Home in 1900: Yankee Hill, Lancaster, Nebraska
Marital Status: Single
You might try to send your request to the "Lancaster County" board. Maybe they can help you.
Formerly of North Platte
Lincoln County, Nebraska