Description: TAKEN FROM THE SOURCE SITE httpphilcdcgov the Image Number is 8634 Details as on the source site This historic 1917 map which had been digitally enhanced an colorized depicted the system of water intake and sewer outlet into Lake Superior at Two Harbors Minnesota As was one of a series of instructional drawings this image was used by the Minnesota Board of Health to train the states public health workers The purpose of these images and the training was focused on protecting potable water supplies from bacterial contamination due to incorrect disposal of waste such as sewage that might foul ground water lakes rivers and streams Creation Date 1917
By: ryanlerch
Date: 2006-10-22
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Two Harbours Map sourced from Openclipart is licensed under CC0 1.0
* Note: Date might not match original source and might be an educated guess.