Photo shows David C. Sutherland’s Red Dragon on the Holmes Dungeons & Dragons Basic Set (1978), AD&D Monster Manual (1978) entry, and AD&D Monster Card (1981).
TSR was hit-n-miss when it came to artistic consistency in monster depictions. (The Beholder comes to mind, with an array of different styles; 5th edition D&D cleverly explained this as a “feature, not a flaw” – chalking it up to the beholder’s aberrant psychology and physiology.)
But the red dragon remained consistent, for a while at least. The above ZA link shows how Larry Elmore used the DCS red dragon as his model.