We have tried very hard not to infringe anyones copyright in this website.
Permissions have been asked for, and granted, on that content we know to be copyright protected.
However, if we have made any oversight please contact us and we will add appropriate attribution or remove from the site.
Where an author has died we have tried to contact publisher or other contact to see who holds the rights to the 'orphan work'. We have included such material until such time as we discover the rights holder.