Many of his essays have been collected and published in book format.
He created 15 comics between 1945 and 1959, but only a few of those were published in book format at the time.
Two years later it was decided to publish the story in comic book format.
It started life in a book format, but in recent years as been put online.
Then they had to pare their collection to fit a small book format.
The coloring book format, of line drawings to which the child adds color, has been in production since the early 20th century.
With regards to the comic book format, the work can be split in many different ways.
It is four more years before they convince a publisher to take a chance on their character in the new comic book format.
The book is available in an audio book format as well.
It has since appeared in comic book format and as an animation series.