One important airplane is missing from your list : the Ju-87 "Stuka". Which is found right here in the Marketplace as a Poser model :

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=44764

As for the He-111 there is one available in the 3D Warehouse for Google Sketchup. You need the free version of Sketchup 6 to convert it to 3ds format, which can be imported into Poser.

http://sketchup.google.com/3dwarehouse/details?mid=4786c261cfff4bc58bd08ee7a9d43de3

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