Excerpt:
My criteria for selecting documents to annotate are admittedly fluid. I give emphasis to studies which emerged as important to later planning, but also include those that help to illustrate the wide range of moon and Mars options. Romance to Reality is meant to be a primer for building the future, not merely a catalog of unrealized dreams. - David S. F. Portree
Annotation:
Mars and moon exploration and settlement plans from 1950 to the present are annotated in detail on this site. More than 330 documents are divided into 14 subject categories. Categories include Apollo projects, advanced propulsion, cyclers, stations, and Lagrange points, surface suits, vehicles, and activities, surveys of mission scenarios, risk reduction and human factors, high-profile reports, and many others. Author David S. F. Portree is an independent science writer and historian.