Why did Corduroy The Bear's overalls only have one button?

There is no information in the Corduroy book that tells why Corduroy only has one button. Corduroy himself did not know that he only had one button until Lisa's mother said she would not buy Corduroy because he was missing a button.
There is no information in the Corduroy book that tells why Corduroy only has one button. Corduroy himself did not know that he only had one button until Lisa's mother said she would not buy Corduroy because he was missing a button.