The image is a vintage book cover with a whimsical illustration. The cover is a deep blue color and is covered in small white stars and stylized white fireworks. A large, black silhouette of an elephant is depicted as if floating upwards, being lifted by a cluster of balloons. The balloons are detailed with a cross-hatch pattern. Above the elephant is a white crescent moon. The title, 'ON A LARK TO THE PLANETS' is written in white, stylized lettering on the upper left side of the cover. The author's name, 'MONTGOMERY', is written in white at the bottom of the cover. The overall style is reminiscent of early 20th-century children's book illustrations.