Share 'Seaside Tintypes:'

Hi all. I am currently researching the supposed prevalence of Tintypists operating in Seaside towns in the UK and on beaches. My initial focus was on Scottish Seaside towns owing to the hunch that the Tintype was more popular there than it was in England. I was wondering if anyone out there knew anything about this or (now i'm really stretching) where I might be able to find any primary material…