A black and white negative of a man standing in a potato field and holding a sign that reads, '600# [600 pounds] 20% of Manure Salts in [? illegible] Addition to [illegible] Fert [fertilizer].'
A black and white negative of a man standing in a potato field and holding a sign that reads, '600# [600 pounds] [illegible]' during a fertilizer experiment.
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Agricultural Society of South Carolina Visual Materials✖[remove]2