| 1938 UNION Control Highway Crossing Signals Art |
| 1938 WILLING Highway Crossing Signaling System |
| 1938 MACKEY Highway Crossing Signaling System |
| 1938 STOKER Control Highway Crossing Signals |
| 1938 LAY Control Highway Crossing Signals Art |
| 1938 SOULIS Combined Highway Rail Vehicle Axle |
| 1938 FLORENCE Convertible Rail Highway Vehicle |
| 1938 BENJAMIN Control Highway Crossing Signals |
| 1938 PFLASTERER Controlling Highway Crossing Signals |
| 1938 REICHARD Highway Crossing Signaling System |
| 1938 SIMPSON THORNTON Highway Signal Patent |
| 1938 HAINES Highway Crossing Signal Railways Art |
| 1938 UNION Controlling Highway Crossing Signals |
| 1938 GEN Highway Crossing Signaling System Art |
| 1938 FIELD Highway Crossing Signaling System Art |
| 1938 CLAUS Controlling Highway Crossing Signals |
| 1938 SHECHAN Railroad Highway Vehicle Structure |
| 1938 UNION Highway Crossing Signal Railways Art |
| 1938 GEN Highway Crossing Signal System Art |
| 1938 DORSCHEL Highway Crossing Signal System Art |
| 1938 Pennsylvania State Hiway Highway Hwy Road Map |
| 1938 SOUTH DAKOTA State Highway Map |
| 1938 PENNSYLVANIA OFFICIAL STATE HIGHWAY MAP |
| 1938 Large Fold Out Highway Map, Georgia, GA ! |
| 1938 LOOKING SOUTH COAST HIGHWAY SANTA MONICA CA PC |
| 1938 EAGLE ROCK LINCOLN HIGHWAY EVANSTON FT BRIDGE WY |
| 1938 Arizona Highway Department H Diamond License Plate |
| 1938 North Carolina Highway Map Unused |