Likewise Dicing with Dragons by Livingstone was an early influence on me, after the Mentzer Red Box, Marvel Super Heroes, and Top Secret (maybe Gamma World 2E) but definitely before any non-TSR products.I got What Is Dungeons And Dragons before my Moldvay boxed set arrived, and to this day I feel my "D&D mindset" owes more to Butterfield et. al than it does to any official publication (including Holmes, it was his writing outside the Blue Book that got me excited about D&D again).