{"schema_version":"bf_book_companion_v1","release_id":"20260417T232332Z","book":{"amazon_purchase_url":"https://www.amazon.com/dp/0448464624?tag=bookfrontier-20","asin":"0448464624","authors":["Patricia Brennan Demuth","Who HQ","John Mantha","Tim Tomkinson"],"book_id":"9780448464626","canonical_url":"https://bookfrontier.com/books/what-was-pearl-harbor-0448464624","cover_image_url":"https://img.bookfrontier.com/9780448464626.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","description":"A terrifying attack! On December 7, 1941, Japanese war planes appeared out of nowhere to bomb the American base at Pearl Harbor in Hawaii. It was a highly secretive and devastating attack: four battleships sunk, more than two thousand servicemen died, and the United States was propelled into World War II. In a compelling, easy-to-read narrative, children will learn all about a pivotal moment in American history.","forthcoming":false,"isbn13":"9780448464626","publication_date":"20130627","publisher":"Penguin Young Readers Group","slug":"what-was-pearl-harbor","subtitle":"","title":"What Was Pearl Harbor?"},"discovery":{"categories":{"all":[{"bisac_code":"JNF025130","confidence_band":"medium","label":"Military & Wars","score":0.7678,"source":"bisac_hint_model"},{"bisac_code":"HIS027390","confidence_band":"medium","label":"WWII Pacific Theater","score":0.7346,"source":"bisac_hint_model"},{"bisac_code":"JNF025210","confidence_band":"medium","label":"20th Century U.S.","score":0.7325,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"JNF025130","confidence_band":"medium","label":"Military & Wars","score":0.7678,"source":"bisac_hint_model"},{"bisac_code":"HIS027390","confidence_band":"medium","label":"WWII Pacific Theater","score":0.7346,"source":"bisac_hint_model"},{"bisac_code":"JNF025210","confidence_band":"medium","label":"20th Century U.S.","score":0.7325,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"JNF025130","confidence_band":"high","label":"Military & Wars","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF025210","confidence_band":"high","label":"20th Century U.S.","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF043000","confidence_band":"high","label":"Civics & Government","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Military & Wars","score":0.7678,"slug":"military-wars"},{"label":"WWII Pacific Theater","score":0.7346,"slug":"wwii-pacific-theater"},{"label":"20th Century U.S.","score":0.7325,"slug":"20th-century-u-s"}],"reader_fit":["Good for readers who enjoy Military & Wars","Good for readers interested in american","Good for fans of History"],"related_lists":[],"series":null,"similar_books":[{"authors":["Jess Brallier","Who HQ","Tim Foley"],"book_id":"9781524792657","cover_image_url":"https://img.bookfrontier.com/9781524792657.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":19.3249,"title":"What Was the Bombing of Hiroshima?","url":"https://bookfrontier.com/books/9781524792657"},{"authors":["Nico Medina","Who HQ","Dede Putra"],"book_id":"9780593521656","cover_image_url":"https://img.bookfrontier.com/9780593521656.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":19.184,"title":"What Was World War I?","url":"https://bookfrontier.com/books/9780593521656"},{"authors":["James M. Scott"],"book_id":"9781324002994","cover_image_url":"https://img.bookfrontier.com/9781324002994.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":15.19,"title":"Black Snow","url":"https://bookfrontier.com/books/9781324002994"},{"authors":["James H. Hallas"],"book_id":"9780811776899","cover_image_url":"https://img.bookfrontier.com/9780811776899.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":15.1442,"title":"Guam","url":"https://bookfrontier.com/books/9780811776899"},{"authors":["Montel Williams","David Fisher"],"book_id":"9781335081032","cover_image_url":"https://img.bookfrontier.com/9781335081032.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":15.1386,"title":"The Sailing of the Intrepid","url":"https://bookfrontier.com/books/9781335081032"},{"authors":["Robert L. Wise","Art Shaw"],"book_id":"9780062907455","cover_image_url":"https://img.bookfrontier.com/9780062907455.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":15.1068,"title":"82 Days on Okinawa","url":"https://bookfrontier.com/books/9780062907455"},{"authors":["Ronald J. Drez"],"book_id":"9781426322457","cover_image_url":"https://img.bookfrontier.com/9781426322457.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":13.9531,"title":"Remember D-day","url":"https://bookfrontier.com/books/9781426322457"}],"topics":[{"evidence_refs":["keyword:american history for kids"],"label":"History","score":0.9238,"slug":"history"},{"evidence_refs":["keyword:american history for kids"],"label":"Kids","score":0.2279,"slug":"kids"},{"evidence_refs":["keyword:world war 2"],"label":"World","score":0.2022,"slug":"world"},{"evidence_refs":["keyword:military books for kids"],"label":"Military","score":0.1382,"slug":"military"}],"what_you_get":["Themes: History, Kids, Military.","Reading lane: Military & Wars and Wwii Pacific Theater.","Publisher: Penguin Young Readers Group."]},"llm_signals":null,"source_presence":{"amazon":true,"book_detail":true,"goodreads":true,"llm_signals":false,"similarity_seed":true},"stats":{"amazon_ratings_count":0,"goodreads_ratings_count":1259,"goodreads_reviews_count":128,"quality_score":0.9098}}