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Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date is from Catalogue of Copyright Entries.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-28T23:54:28Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5136.jpg?verify=1791809142-aoyyRQ8bbUc8cloCwrMEMdWrstAPZdpYXwE6tEXHBDQ%3D"},{"id":476,"series":{"id":87,"name":"Detective Comics"},"number":"29","volume":"3","descriptor":"29","variant_name":"","title":"","publication_date":"July 1939","key_date":"1939-07-00","on_sale_date":"1939-05-31","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date from the publication date and volume number found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 3. Class B periodical. Copyright number B 415985. Volume number not found in the original comic.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-28T23:51:39Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5137.jpg?verify=1791809142-QsIVydTmTowb4vhfZRagi6fgAg4X%2B6K2ys5HnxvRKiI%3D"},{"id":496,"series":{"id":87,"name":"Detective Comics"},"number":"30","volume":"3","descriptor":"30","variant_name":"","title":"","publication_date":"August 1939","key_date":"1939-08-00","on_sale_date":"1939-06-30","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date from the publication date found in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 3. Class B periodical. Copyright number B 422127. Volume number not listed in the original comic indicia.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-29T01:10:38Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5138.jpg?verify=1791809142-GnjpoWSQSUVHRDdEPoGLpmqEpJMn7%2BqpZCyjj2fGp4Q%3D"},{"id":516,"series":{"id":87,"name":"Detective Comics"},"number":"31","volume":"3","descriptor":"31","variant_name":"","title":"","publication_date":"September 1939","key_date":"1939-09-00","on_sale_date":"1939-07-30","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date from the publication date found in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 3. Class B periodical. Copyright number B 424437. Volume number not listed in the original comic indicia.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-30T00:15:08Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5139.jpg?verify=1791809142-k7tj3vVFpj6n8ihX2k7wWp2MrACLYtQBV%2BwzdZ%2FSoGw%3D"},{"id":537,"series":{"id":87,"name":"Detective Comics"},"number":"32","volume":"3","descriptor":"32","variant_name":"","title":"","publication_date":"October 1939","key_date":"1939-10-00","on_sale_date":"1939-08-30","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. 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Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date from the publication date and volume number found in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 4. Class B periodical. Copyright number B 432358. The volume number is not found in the comic itself.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-30T15:39:43Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5141.jpg?verify=1791809142-TzoEz98HTjeh0G2OvL6%2FK9YNG4h21b1q9tv8OOyt7x8%3D"},{"id":584,"series":{"id":87,"name":"Detective Comics"},"number":"34","volume":"3","descriptor":"34","variant_name":"","title":"","publication_date":"December 1939","key_date":"1939-12-00","on_sale_date":"1939-10-30","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. 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Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"The volume number and the on-sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, January-December 1940, Numbers 1-4. Class B periodical. Copyright number B 437787.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-30T15:39:45Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5143.jpg?verify=1791809142-%2B%2BxWD2YyXSN4o%2FJaYY1hi%2FtrdkEueELHUPPRolSoiBw%3D"},{"id":670,"series":{"id":87,"name":"Detective Comics"},"number":"36","volume":"3","descriptor":"36","variant_name":"","title":"","publication_date":"February 1940","key_date":"1940-02-00","on_sale_date":"1939-12-30","price":"0.10 USD","page_count":"68.000","editing_credits":["Vin Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"Volume number and the on sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, January-December 1940, Numbers 1-4. Class B periodical. Copyright number B 440425.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-04-30T01:46:49Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5144.jpg?verify=1791809142-5DT6c%2Btb2%2Bjs8O5bqVZ7BqIKrGmv8vuL%2BjdJgqUKvbo%3D"},{"id":709,"series":{"id":87,"name":"Detective Comics"},"number":"37","volume":"3","descriptor":"37","variant_name":"","title":"","publication_date":"March 1940","key_date":"1940-03-00","on_sale_date":"1940-02-02","price":"0.10 USD","page_count":"68.000","editing_credits":["Vincent A. Sullivan"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"Volume number and the on sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, January-December 1940, Numbers 1-4. Class B periodical. Copyright number B 443609.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-08-13T06:36:05Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5145.jpg?verify=1791809142-WXaJHfbwyfivOyYmDa6Ker43ir7cJWEP2AoxQJOnnbE%3D"},{"id":754,"series":{"id":87,"name":"Detective Comics"},"number":"38","volume":"","descriptor":"38","variant_name":"","title":"","publication_date":"April 1940","key_date":"1940-04-00","on_sale_date":"1940-03-06","price":"0.10 USD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"The on-sale date is the publication date reported in the U. S. Copyright Office filing found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Class B periodical. Copyright number B 449539.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-07-08T05:28:43Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5146.jpg?verify=1791809142-0iT1S4rnK%2BvAozW2p%2F8aF8%2FWPtGfqjdQ9ODwIPoOhaI%3D"},{"id":798,"series":{"id":87,"name":"Detective Comics"},"number":"39","volume":"","descriptor":"39","variant_name":"","title":"","publication_date":"May 1940","key_date":"1940-05-00","on_sale_date":"1940-04-05","price":"0.10 USD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Class B periodical. 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Copyright number B 457915.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-05-15T14:29:20Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5148.jpg?verify=1791809142-Qmn3El5l39op%2BvZfXKc6tuj7X4oIqlH0IIJq1pvJDcE%3D"},{"id":911,"series":{"id":87,"name":"Detective Comics"},"number":"41","volume":"","descriptor":"41","variant_name":"","title":"","publication_date":"July 1940","key_date":"1940-07-00","on_sale_date":"1940-06-07","price":"0.10 USD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On-sale date from copyright registration.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-05-15T21:19:37Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5149.jpg?verify=1791809142-vVFMI507e7Rs1BTJPJJxDURlg%2Fqf3KiFTa2DN5FHoLQ%3D"},{"id":961,"series":{"id":87,"name":"Detective Comics"},"number":"42","volume":"","descriptor":"42","variant_name":"","title":"","publication_date":"August 1940","key_date":"1940-08-00","on_sale_date":"1940-07-03","price":"0.10 USD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On-sale date from copyright registration.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-05-16T16:25:15Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5150.jpg?verify=1791809142-bLYLCzfiNbaJGJX2MUU43NEABhBtreht%2F%2FS1KBBfQvA%3D"},{"id":1020,"series":{"id":87,"name":"Detective Comics"},"number":"43","volume":"","descriptor":"43","variant_name":"","title":"","publication_date":"September 1940","key_date":"1940-09-00","on_sale_date":"1940-08-02","price":"0.10 USD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"On-sale date from copyright registration.","variant_of":null,"keywords":[],"created":"2001-02-06T00:00:00Z","modified":"2026-05-16T19:32:18Z","cover_url":"https://beta.comics.org/media//img/gcd/covers_by_id/5/w400/5151.jpg?verify=1791809142-oPt52YTrY%2BVstDFdxhQdyg%2B3KMRk741wDChaLE0N81k%3D"},{"id":1124032,"series":{"id":87,"name":"Detective Comics"},"number":"43","volume":"","descriptor":"43 [Canadian]","variant_name":"Canadian","title":"","publication_date":"September 1940","key_date":"1940-09-00","on_sale_date":"","price":"0.15 CAD","page_count":"68.000","editing_credits":["Whitney Ellsworth"],"indicia_publisher":{"id":70,"name":"Detective Comics Inc."},"brand_emblems":[{"id":2,"name":"A DC Publication"}],"isbn":"","barcode":"","rating":"","indicia_frequency":"monthly","notes":"As of the next issue, a Canadian price of 15 cents is on the covers. 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