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| Date: | 1937 |
|---|---|
| Description: | Three men laying wire in a forested area for W.H.A.S Radio. One of the men is operating an International T-20 TracTracTor (crawler tractor). |
| Date: | 1961 |
|---|---|
| Description: | An experimental International HT 340 tractor is being tested by a man wearing a helmet in an outdoor environment. Other men are standing in the background. |
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