| 1928 COMMW STEEL Locomotive Structure Patent |
| 1928 FERGUSON Gate Structure Railway Crossings |
| 1928 SHEEHAN Locomotive Structure Patent Print |
| 1928 LE Airplane Wing Structure Patent Print Art |
| 1928 SMALL Metallic Structure Railway Cars Art |
| 1928 BAILLET Doll Structure Patent Print Art |
| 1928 HARBISON Side Frame Structure Patent Print |
| 1928 DAVIS End Structure For Tanks Patent Print |
| 1928 UNION Metallic Structure Railway Cars Art |
| 1928 CHRISTIANSON Car Door Structure Patent |
| 1928 BUDD EDWARD G CO Soundproofing Metallic Structure |
| 1928 US CHAIN FORGING Bumper Structure Art |
| 1928 SHILLIAM CHARLES Nest Structure Patent |
| 1928 BREMER FREDERICK Bumper Structure Patent |
| 1928 COMMW STEEL Railway Vehicle Structure Art |
| 1928 CHICAGO Signal Light Supporting Structure |
| 1928 ASHE Railway Vehicle Structure Patent Print |
| 1928 ASHE WILLIAM Locomotive Structure Patent |
| 1928 KARL Hull Structure Gigid Airships Art |
| 1928 ARNOLD CHRISTIANSON Brake Structure Patent |
| 1928 OHIO STEEL FOUNDRY Side Frame Structure |
| 1928 HOWARD Locomotive Structure Patent Print |
| 1928 KELLEY Soundproofing Metallic Structure Art |
| 1928 MCCARTHY Signal Light Supporting Structure |
| 1928 CHICAGO RAILWAY EQUIPMENT CO Brake Beam Structure |