He was one of the show's most prolific writers and became a regular director in later years.
He was also a prolific writer of local history books.
He was also a prolific writer for television, with more than 100 shows to his credit.
He is a prolific writer, having had over 70 books for young people published between 1973 and 2003.
He was never a prolific writer, and has published little for some years.
She was a prolific writer who produced more than 70 books.
At that time, he became a prolific writer on international law.
He was a prolific writer of books on law, energy, history, politics and international relations.
He is one of the most prolific writers for film and television in the country.
He is a prolific writer with more than 225 books to his credit.
