Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.4.0.3
Balance Sheets (Current Period Unaudited) (Parentheticals)
Mar. 31, 2016
a
$ / shares
shares
Dec. 31, 2015
a
$ / shares
shares
Land Surface Rights [Member]    
Land (surface rights) 878,259 878,268
Royalty Interests in Acres 1_16 [Member]    
Nonparticipating perpetual royalty interest in acres 373,777 373,777
Royalty Interests in Acres 1_128 [Member]    
Nonparticipating perpetual royalty interest in acres 85,414 85,414
Acres Acquired 10,065 10,065
Certificates of Proprietary Interest, par value (in dollars per share) | $ / shares $ 100 $ 100
Certificates of Proprietary Interest, outstanding (in shares) | shares 0 0
Sub-share Certificates in Certificates of Proprietary Interest, par value (in dollars per share) | $ / shares $ 0.0333 $ 0.0333
Sub-share Certificates in Certificates of Proprietary Interest, outstanding (in shares) | shares 8,066,180 8,118,064