- 
    
      Verification and Characterization of a Fracture Network within the Maquoketa Shale Confining Unit, Southeastern WisconsinOpen-file report; contains unpublished data that has not yet been peer-reviewed.
- 
    
      Hydraulic Conductivity and Specific Storage of the Maquoketa ShaleOpen-file report; contains unpublished data that has not yet been peer-reviewed.
 
      
      