Seryddiaeth a Seryddwyr by J. Silas Evans - 1923
Here is a Welsh language astronomy book titled "Seryddiaeth a Seryddwyr", which translates to "Astronomy and Astronomers". It was published by Silas Evans in 1923. I find it interesting that the forward is in both English and Welsh. The book is dedicated to Arthur Butler Phillips Mee, who was a Scottish-born journalist and amateur astronomer.