My interpretation of the rules is that it would be paid editing so you would have to declare who is paying you on your user page or edit summary or the talk page for pages you edit
Paid editing by glam staff about their institutions is frowned on as COI - conflict of interest - but editing articles in your area of expertise is generally not COI. Editing stuff about your collection is generally not COI but be careful.
Look at contributing to Commons and wikidata as well as English Wikipedia.
Look at https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings
Hope this helps
Joe_______________________________________________Hi all,Have a look at the message from Rosa below - she's looking for some advice on contributing to Wikipedia relating to collections she is representing. If anyone is in the area and/or is interested in helping our, feel free to get in touch! It sounds like she's already done a fair amount of research, so may only need a bit of support.All the best,Daria---------- Forwarded message ----------
From: Rosa Sadler <firstname.lastname@example.org>
Date: 23 September 2015 at 09:08
Subject: Contributing to articles on Wikipedia using materials at National Fairground Archive
To: email@example.comDear GLAM UK,I am a member of staff in the Library at the University of Sheffield. The National Fairground Archive is based within the Library and we are interested in using our subject knowledge and collections to contribute to Wikipedia articles relating to this area. We understand the policy about not contributing original research and would not be doing this.
I have looked at your pages on Wikipedia and have seen the information about Wikipedia projects and Wikimedians in residence and I want to ask: is it a requirement that we be part of a project with a pre-existing Wikimedian or is it ok for members of staff here to become editors and make contributions independently? Would this be seen as a conflict of interest?We would, of course, be using individual accounts and obeying the guidelines for editors. Our aim in contributing would be to make information about this area more available to the public by adding to articles and to provide links (in citations) to our collections so that the general public can further benefit from them.I am interested to hear whether this kind of activity would be acceptable to the Wikipedia community and as such I look forward to your response.Best wishes,Rosa SadlerLibrary Information Services Coordinator
University of Sheffield
--Daria Cybulska - Head of Programmes and Evaluation, Wikimedia UK--
Wikimedia UK is a Company Limited by Guarantee registered in England and Wales, Registered No. 6741827. Registered Charity No.1144513. Registered Office 4th Floor, Development House, 56-64 Leonard Street, London EC2A 4LT. United Kingdom. Wikimedia UK is the UK chapter of a global Wikimedia movement. The Wikimedia projects are run by the Wikimedia Foundation (who operate Wikipedia, amongst other projects).
Wikimedia UK is an independent non-profit charity with no legal control over Wikipedia nor responsibility for its contents.
Wikimedia UK mailing list