Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.3.0.814
Balance Sheets (Current Period Unaudited) (Parentheticals)
Sep. 30, 2015
a
$ / shares
shares
Dec. 31, 2014
a
$ / shares
shares
Real Estate Acquired [Member]    
Acres Acquired 10,065 10,125
Land (surface rights) 878,309 899,149
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
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 8,174,086 8,322,399