Spirou et les Hommes-Bulles

Spirou et les hommes-bulles (Spirou and the bubble-men), written and drawn by Franquin, is the seventeenth album of the Spirou et Fantasio series. The title story appeared sequentially (in black & white) in Le Parisien Libéré, and only the accompanying story Les petits formats was serialised in Spirou magazine as well, before both were published in a hardcover album in 1964.