I used BrickStock and BrickLink to identify exactly how many of each part I would need to be able to build ANY Classic Space or Futuron set (though not all at the
How to use Brickstock - Soar Brick
Single Red Lego Block Brick Stock Photo - Download Image Now - iStock
BrickStock - (Not quite hiding) BrickArms (and Modulex) colours - Digital LEGO: Tools, Techniques, and Projects - Eurobricks Forums