dʒˈeɪ. ɡɹˈænt θˈiːsən bˈɔːɹn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi sˈɛvən ɪz ɐ kɐnˈeɪdiən bˌɪblɪˈɑːɡɹəfɚ ænd bˈʊksɛlɚ pændˈoːɹəz bˈʊks, bˈʊk ˌaɪtˈiː ˈɛntɚpɹˌaɪzᵻz.
J. Grant Thiessen (born 1947) is a Canadian bibliographer and bookseller (Pandora's Books, BookIT Enterprises).