Take a look at the blog Spode History https://spodehistory.blogspot.com. There should be a way to contact the author, Pam Woolliscroft. You can also link to her website or go there directly https://woolliscroftorg.blogspot.com and contact her. Pam is the former Spode Museum curator. Also, the Spode Society https://www.spode-society.co.uk has a contact link, and finally, they also have a Facebook page https://www.facebook.com/SpodeSociety/8730564