![Philly Mapathon Mapping Mentors wore shirts to help them stand out at the event](https://www.azavea.com/wp-content/uploads/2017/05/IMG_1717_01-e1494356705498-scaled.jpg)
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Philly Mapathon Mapping Mentors
Published at 2560 × 1619 in Volunteers Put 9,000 Buildings on a Map Used to Plan Malaria Eradication Efforts
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Published at 2560 × 1619 in Volunteers Put 9,000 Buildings on a Map Used to Plan Malaria Eradication Efforts