Bob Keeshan Christmas cards featuring an elaborate cartoon of ''Howdy Doody'' and ''Clarabell'' playing in a band. Keeshan played the horn honking Clarabell on ''The Howdy Doody Show'' before creating ''Captain Kangaroo.'' These five festive cards reads in full: ''At Merry Xmas Time / it's Howdy Doody Time / 'Clarabell' and Bobby Keeshan''. Single sided on thick card stock, each measures 4.25'' x 6.75''. Light aging to two cards, else near fine.