county
- Ant Distribution and Abundance in New England 1990-2014. HF147
- Ants in the New York Pine Barrens 2012-2013. HF239
- Ants of the Adirondack Mountains High Peaks 2016. HF350
- Assessing Plant Phenological Character Displacement Across the Eastern United States Since 1895. HF335
- Assessing Plant Phenological Patterns in the Eastern United States Over the Last 120 Years. HF309
- Massachusetts Historical Landcover and Census Data 1640-1999. HF014
- Northern Range Limit of Aphaenogaster picea in Maine 2015. HF323
- Taxonomy and Biogeography of Nematode Communities at Harvard Forest 2014. HF274
- Timber Harvesting Study in North Quabbin Region of Central Massachusetts 1984-2001. HF046
- Widespread Sampling Biases in Herbaria Revealed from Large-Scale Digitization 1656-2016. HF296