| Year | 2006 |
| Date | 17-Mar |
| Volume | 196 |
| Issue | 4,269 |
| Page | 332 |
| Category | Locomotive |
| Part | 3 |
| Title | Britain's Private Locomotive Builders |
| Author | Dave Roberts |
| Notes | The Scottish builders. Neilson & Co., Sharp, Stewart & Co., Dubs & Co., North British Locomotive Company, William Beardmore & Co., Andrew Barclay, Sons & Co., further reading |