File:Baler beside the road to Frogmore Farm - geograph.org.uk - 1449922.jpg - Wikimedia Commons
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File:John Deere 338 square baler 2.jpg - Wikimedia Commons
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Bridon Brand Baler Twine - Made in the USA For Large Bales - 4000' 1 Spool. Knot strength exceeds 450. Heavy-Duty for 3'X3', 3'X4', AND 4'X4' balers.
Baler Twine Poly 4000/450 -1 Ball -Blue - The Mill - Bel Air, Black Horse, Red Lion, Whiteford, Hampstead, Hereford, Kingstown
How to Bale Hay in the Round: 13 Steps (with Pictures) - wikiHow Life
Balers - SolidsWiki