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| Date: | 1943 |
|---|---|
| Description: | A mechanic calibrates a fuel injection pump for a TD-18 crawler tractor (TracTracTor) at J.D. Adams Co., an International Harvester dealership. |
| Date: | 1920 |
|---|---|
| Description: | Front cover of a pamphlet advertising the Caterpillar tractor, featuring an illustration of a Caterpillar crawler tractor pulling a road grader. |
| Date: | 1917 |
|---|---|
| Description: | Front cover of a booklet advertising the Caterpillar 45 tractor. |
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