| Year | 2005 |
| Date | 04-Mar |
| Volume | 194 |
| Issue | 4,242 |
| Page | 252 |
| Category | Exhibition |
| Part | |
| Title | Competition Models at The 74th Model Engineer Exhibition. Class A3: Internal Combustion Engines |
| Author | Brian Perkins and Neil Read |
| Notes | 1938 DKW ULD 250cc racing engine by Rolf Depping |