Statistics for occurrence #1 of “Aberjona river” in chapter 13 of Medford Historical Society Papers, Volume 23.:

...ecame a part of Boston's water supply. For many years both before and after Boston assumed control of the pond, many complaints were made in regard to the impurity of the water. Situated upon the Aberjona river and its tributaries were many tanneries and other works whose drainage found its way into that river and thence into the pond. This condition of things became so unbearable that some action had to ...
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