It's tough work for most people who will give up in frustration, particularly as each county seems to have a different means of navigating their county assessor maps.  However, I think you have the skills to do this.  The following link will get you started. 

https://gis-cochise.opendata.arcgis.com/app/37d793d478664634b4de3ad8042f248a

You may need to scale out (enlarge) until you see Tombstone and the airport.  Then, check the area south of Davis Road.  Click any parcel of interest to find who the owner is.  Note that state lands and other public properties are not shown as parcels as they are not taxed by the county.

To orient yourself, find the Tombstone Airport and Davis Road on the map you can find in the link below.  Also, note that terrain limits the placement of access roads, should we be lucky enough to develop a mine there.  So, simply having contiguous clusters of claims does not mean that access will easy.  Some portions of private land and/or private roads will be needed, I am sure.  Hence, the question to Tracy.

https://www.libertystaruranium.com/wp-content/uploads/2012/03/LBSR_InvestorPresentation-v3_20130521_Page_13.png