Exploring and Using the Space Environment (PDF)
Author Andrew W. V. Clark. Published in the proceedings of the 37th. Space Congress, Cocoa Beach, FL May 1 - 5, 2000.. This paper describes some of the concerns that Space Frontier Operations, Inc. (SFO), has about space exploration and describes some of the initial results of studies being undertaken at SFO to further the exploration of space. It also lays out SFO's Space Exploration Plan (SEP).

Innovative Financing of a Large Space Project (PDF)
Authors George R. Tyson and Andrew W. V. Clark. Published in the proceedings of the 38th Space Congress, Cocoa Beach, FL May 1 - 3, 2001. This paper describes the way in which the SEP fits into the standard protocols used by the finance industry including the use of complimentary companies.

Apollo by the Numbers
Author Richard W. Orloff. A statistical reference for the manned phase of Project Apollo