<https://bcstudies.com/book_film_review/secret-service-political-policing-in-canada-from-the-fenians-to-fortress-america/>
<http://schema.org/potentialAction>
<https://bcstudies.arts.ubc.ca/book_film_review/secret-service-political-policing-in-canada-from-the-fenians-to-fortress-america/>