They want the term of copyright changed to life plus 70 years, instead of 2039 for unpublished works of uncertain date, a standard that makes it impossible to reproduce or display things like letters home from the front.
Diane Lees, Director General, Imperial War Museums said:
"During the First World War Centenary commemorations, many organisations want to make original unpublished works such as diaries and letters accessible to the public. Because they are still under copyright protection, they cannot do so without seeking permission from the rights holder. This is even more problematic if the rights holders are untraceable.
We are asking everyone who cares about our history, everyone who cares about telling our collective story without restrictions, to join the campaign."
Up to 50% of archival records in the UK are 'orphan works'. This is when the rights holder cannot be identified and/or traced. The Imperial War Museum has an estimated 1.75 million documents that are orphan works, approximately 20-25% of the 7.9 million documents in their collections.
The campaign is calling on the UK Government to reduce the term of copyright protection in certain unpublished works from the end of the year 2039 to the author's lifetime plus 70 years, as per provisions laid out in the Enterprise and Regulatory Reform Act (ERRA) 2013.