hwa
- Harvard Forest Schoolyard Data since 2004. HF412
- Hemlock Understory Vegetation Plots at Harvard Forest since 2002. HF048
- Hemlock Woolly Adelgid and Elongate Hemlock Scale Surveys in Connecticut and Massachusetts 1997-2011. HF289
- Landscape Response to Hemlock Woolly Adelgid in Southern New England 1997-2011. HF081