We usually only grant permission for a specific use. You'll need to contact us again if you want to use it elsewhere in the future.
Once permission is granted, you'll need to credit "Hertfordshire Archives and Local Studies (HALS)" and include the reference number where the document is reproduced.
It might not always be possible to reproduce items if they're subject to copyright or if the owner has placed restrictions on their reproduction. Many documents in the collections are still in copyright, even if they're very old.
If the copyright owner is not known, it'll be your responsibility to trace them.