Space Flight simulations
"Go Play In Space" (Second Edition) by Bruce Irving.
Fun with Martin Schweiger's Orbiter Space Flight Simulator. This Introductory Tutorial manual is a colorful picture book about humans going to Mars, how they might realistically go about this, and where this might lead in the future.
Download Go Play in space here
This index is not being updated at present. Use the SEARCH facility. MM, November 2016.