File:Dragonfly Mercury Project sampling site at Lowell National Historical Park in 2021. (46838b28-85a5-4351-b2d0-4a45e33a37b1).jpg
![File:Dragonfly Mercury Project sampling site at Lowell National Historical Park in 2021. (46838b28-85a5-4351-b2d0-4a45e33a37b1).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Dragonfly_Mercury_Project_sampling_site_at_Lowell_National_Historical_Park_in_2021._%2846838b28-85a5-4351-b2d0-4a45e33a37b1%29.jpg/800px-Dragonfly_Mercury_Project_sampling_site_at_Lowell_National_Historical_Park_in_2021._%2846838b28-85a5-4351-b2d0-4a45e33a37b1%29.jpg?20230622114932)
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