Born in Baltimore, Maryland, Carter was 11 years old when he witnessed his mother's death.
She was hit by a streetcar and killed as they crossed the street, a situation which impacted him deeply and ultimately led him into the work force as a youth.
[1] Later in life, he would start the Just Kids Safety Club, which encouraged looking both ways before crossing the street, in response to his mother's tragic death.
[2] While employed as a Brooklyn Eagle reporter, he met the cartoonist Clare Briggs, who encouraged him to submit a comic strip to a syndicate.
Later that decade, Carter began another strip, Nicodemus O'Malley, which also featured kids as the main characters.