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Rear elevation of Pioneer

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Rear elevation of Pioneer.png An aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to passAn aeroplane is a necessity in times of peaceThumbnailsRoom to pass

Rear elevation of Pioneer and detail of valve shifter; valve face and valve. (Drawing by J. H. White.)