A Collection of Articles on the Exploration of Mars (Republished from the Journal of the British Interplanetary Society, 1989-1997, selected issues/articles), Ed. Robert M. Zubrin, 1997. Volume 1 of a two volume set. Section I contains 11 articles on precursor missions, including concepts for in situ resource utilization on Mars, sample return missions, in situ propellant production, water vapor adsorption reactor, diborane/CO2 rockets for use in Mars ascent vehicles, pH measurements of the Martian surface, Mars subsurface radar mapper, utilization of Martian atmospheric constituents by temperature swing adsorption, and Athena: a possible first step in a program of human Mars exploration. Section II contains 11 articles on early piloted missions, including human aspects, a day in the life at a Mars base, an Antarctic research outpost as a model for planetary exploration, Mars Direct, exploration strategies and the astronaut's toolset, heat transfer for an internal combustion engine on Mars, space suits and life support systems for Mars Exploration, practical methods for near-term human exploration of Mars, future habitability of Mars, and footsteps to Mars: an incremental approach to Mars exploration.