"An ingenious and original little picture story in which a small boy out for a walk - happily with a crayon in his hand - draws himself some wonderful adventures."" -- The Horn Book "The fun lies in the unpredictable twist of plot which are sure to keep the onlooker in a state of surprise, anticipation and great good humor."" -- The New York Times "Harold is of again, this time to Mars. Very zany adventures of the very resourceful Harold."" -- Library Journal