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In page Doctor Who:

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In addition to these, there are off-screen photographs made by photographer John Cura, who was hired by various production personnel to document many of their programmes during the 1950s and 1960s, including Doctor Who.[citation needed] These have been used in fan reconstructions of the serials. The BBC has tolerated these amateur reconstructions, provided they are not sold for profit and are distributed as low-quality copies.[6]