Assertion: brown's book | /r/MadeOf | letter
Facets:
value: from donald j. sobol
type: OTHER
Source sentences:
text: The book contains a letter from Donald J. Sobol detailing the history of the book series and its creation, as well as 15 cases selected from the previously published books.)
text: The book contains a letter from Donald J. Sobol detailing the history of the book series and its creation, as well as 15 cases selected from the previously published books.)