These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
Letter sent from A.A. Thornton (Chartered Patent Agent) to C.H. Watkins (93 Forest Road, Walthamstow E17). Dated May 14th 1917. Re: No. 9050/16 Sparking Plug. Purple type on white paper.
