by Marcel F. Williams
"The effort required to resurrect the Delta Clipper program wouldn’t be very great. Many tests showing the proof that the concept works have already been conducted, and the vehicle’s capabilities have already been proven. Therefore, the Delta Clipper is simply a space vehicle nearly ready for use. All that remains is some final testing,building a full-size vehicle, and then putting the spacecraft to work."
Jason Moore & Ashraf Shaikh
Delta Clipper: A Path to the Future
2003