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Condensed Balance Sheets (USD $)
Apr. 30, 2012
Jan. 31, 2012
Assets    
Cash and cash equivalents $ 1,114,140 $ 10,253,474
U.S. Government securities, at amortized cost (which approximates market) 82,940  
Accrued income receivable (Note 2) 2,915,527 387,980
Prepaid expenses 50,298 53,767
Current assets 4,162,905 10,695,221
U.S. Government securities, at amortized cost (which approximates market) 355,876 473,816
Fixed property, including intangibles, at nominal values    
Amended Assignment of Peters Lease 1 1
Assignment of Cloquet Lease 1 1
Certificate of beneficial interest for 13,120,010 units of land trust 1 1
TOTAL FIXED PROPERTY, including intangibles, at nominal values 3 3
Total assets 4,518,784 11,169,040
Liabilities    
Distribution payable 852,801 9,971,208
Accrued expenses 117,381 166,321
Total liabilities 970,182 10,137,529
Unallocated Reserve (Note 4) 3,548,599 1,031,508
Trust Corpus 3 3
Total Liabilities, unallocated reserve and trust corpus $ 4,518,784 $ 11,169,040