Lt_Gen_Sir_David_Henderson.jpg - Wikipedia

Description Lt Gen Sir David Henderson.jpg	This image shows Lieutenant General Sir David Henderson
Date	As Henderson is shown in the rank of lieutenant general and in the uniform of the Royal Flying Corps, this image dates to the period 24 March 1916 to 31 March 1918
Source	http://www.raf.mod.uk/rafcms/mediafiles/E68E8157_1143_EC82_2E3A59F7852501F6.pdf
Author	This file is lacking author information.
Permission ( Reusing this file )	PD-BRITISH-GOV. The RAF Bulletin from which this image was taken was published on the Royal Air Force web site under crown copyright (see http://www.raf.mod.uk/news/rafbulletin.cfm for confirmation). As it is more than 50 years old, it is now in the public domain.

This work created by the United Kingdom Government is in the public domain .

This is because it is one of the following :

It is a photograph taken prior to 1 June 1957; or
It was published prior to 1974; or
It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1974.

HMSO has declared that the expiry of Crown Copyrights applies worldwide (ref: HMSO Email Reply )
More information .

See also Copyright and Crown copyright artistic works .