Chevy Chase ~ National Lampoon's Christmas Vacation Christmas Cards & Envelopes NATIONAL LAMPOON'S CHRISTMAS VACATION CHRISTMAS GREETING CARDS. 12 CARDS & ENVELOPES. INSIDE: "MAY THE WARMTH OF THE CHRISTMAS SEASON MAKE YOU FEEL GOOD ALL OVER." WARNER BROS. ENTERTAINMENT Glitter Accent on the Front of the Card makes it SPARK!!