Statements of Cash Receipts and Disbursements (Unaudited) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Jun. 30, 2011	Jun. 30, 2010
Statements of Cash Receipts and Disbursements [Abstract]
Proceeds From Royalties Received	$ 192,185	$ 167,500		$ 464,689	$ 379,281
Undistributed cash at beginning of the period	66	67		67	4,457
General and administrative expenses	(46,083)	(39,336)	[1]	(80,718)	(76,716)	[1]
Balance available for distribution	146,168	128,231		384,038	307,022
Cash distribution to unit holders	146,102	128,164		383,972	306,955
Undistributed cash at end of the period	$ 66	$ 67		$ 66	$ 67
Cash distribution per unit based on 277,712 units outstanding	$ 0.53	$ 0.46		$ 1.38	$ 1.11

[1] In December 2009, $4,375 of Corporate Trustee and transfer agent fees, that were scheduled to be paid, went unpaid. These disbursements were made in January 2010.