![](http://www.alamy.com/thumbs/6/C579D5C4-A024-4529-AE4D-979CFAA23CEF/W2TNAJ.jpg)
Evolution of sickle and flail, 33 horse team harvester, cutting, threshing and sacking wheat, Walla Walla, Washington, from Robert N Dennis collection of stereoscopic views
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Photo credit: © Alpha Stock / Alamy / Afripics
License: Licensed
Model Released: No
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