Castle Douglas engineering firm's history examined in fascinating new book ‘The Foundry Castle Douglas’ tells the story of J&R Wallace and the huge role its inventions played in oiling the wheels of agricultural production Retired vet John Sproat with his new book ‘The Foundry Castle Douglas’ (Image: Jim McEwan) Join thousands of others in getting the stories that matter to you sent straight to your inbox.Invalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.