* BonusMaterial: Each of the books in the Boxcar Children Specials spinoff line includes bonus games, recipes and other fun additions.
* TheOtherDarrin: Jessie is the only one to have her original voice actress in both movies. In the movie sequel, Henry, Violet, and Benny were all recast.
* OutlivedItsCreator: ''The Boxcar Children'' series had only 19 books by its original creator, Gertrude Chandler Warner. Then, over a decade after her death, Albert Whitman of ''Albert Whitman & Company'' resurrected the series, producing over '''100''' more books due to reinterest (including a kid-friendly cookbook). Unsurprisingly, after Warner stopped writing them, [[CanonDiscontinuity continuity went right out the window.]] Notably, a couple pets introduced in her later books suddenly disappear, and sadly the storytelling quality does, too.
* ScrewedByTheLawyers: '''And How!''' Not only did original author Gertrude Chandler Warner [[https://www.findagrave.com/memorial/8123179/gertrude-chandler-warner never marry or have children]], but by the time of her 1979 death she had outlived not only her parents but also both of her siblings [[https://www.findagrave.com/memorial/193152303/frances-lester-hersey and even those]] [[https://www.findagrave.com/memorial/116960986/john-anthony_carpenter-warner siblings' spouses.]][[note]]1971, 1975 and 1978 respectively for Frances, John and Marion/Mayo.)[[/note]] As the sole child (living or otherwise) among all three siblings, Gertrude's entire estate -- including the Boxcar Children IP -- was left to nephew David Brett Warner (John's son). Naturally, publisher Albert Whitman wasted no time buying out the series for an unknown sum -- and then sat on the franchise for over a decade before relaunching it as [[FollowTheLeader basically a Nancy Drew/Hardy Boys clone for younger readers.]] To add insult to injury, Gertrude Chandler Warner [[https://www.boxcarchildren.com/books/?taxonomy=series&term=the-boxcar-children-mysteries is still the sole name listed on the covers]] despite the Warner family having completely died off and thus having zero creative input whatsoever.[[note]]David Brett [[https://www.findagrave.com/memorial/116960985/david-brett-warner died in 1999 at 72]], [[HistoryRepeats himself unmarried with no children.]][[/note]]
* SpinoffCookbook: ''The Boxcar Children Cookbook'', released in 1991 and featuring easy recipes that kids can make from books 1-19.
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