Here are a set of useful pages with information on gaming the Reconquista.
Classic Battletech Rules
Classic Battletech is a free 24 page set of rules for playing the original game of giant robots on hex maps.
A Cast of Thousands Miniatures Rules
A Cast of Thousands is not so much a set of miniatures rules as a rules mechanic. It’s designed to allow you to play “cinematic games” where you set your own level of risk-and-reward.
White Mountain Board Game
White Mountain is a hex and counter board game for the Thirty Years War. It’s designed in the vein of the popular Command and Colors system.
Lost Minis Wiki
A work in progress, the Lost Minis Wiki is attempting to catalog as many of the sadly-out-of-print miniatures as possible. As with any Wiki, it’s only as good as it’s contributors, however, so add to it if you can.