https://www.dnr.state.mn.us/invasives/aquaticplants/purpleloosestrife/index.html

Minnesota Department of Natural Resources.

https://www.eddmaps.org/distribution/usstate.cfm?sub=3047

University of Georgia. Center for Invasive Species and Ecosystem Health.

Provides state, county, point and GIS data. Maps can be downloaded and shared.

https://www.invasiveplantatlas.org/subject.html?sub=3047

University of Georgia. Center for Invasive Species and Ecosystem Health.

https://naisma.org/naisma-resources/biocontrol/biocontrol-factsheets/

North American Invasive Species Management Association.

The NAISMA Classical Biocontrol Committee is excited to announce new peer-reviewed weed biocontrol publications for use by managers and landowners. Subject matter experts are developing a series of factsheets that cover invasive plants and their associated biological control agents in North America. Funding for these factsheets is provided by the United State Forest Service. NAISMA is partnering with iBiocontrol.org to host these publications.
See also: Resources on Biocontrol and Classical Weed Biocontrol Factsheets Released for Landowners and Weed Managers (Press Release - Aug 31, 2022)

https://nas.er.usgs.gov/viewer/omap.aspx?SpeciesID=239

DOI. USGS. Wetland and Aquatic Research Center.

Provides detailed collection information as well as animated map.

https://www.pesttracker.org/map.php?code=PCYAEBB

USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System.

https://plants.usda.gov/home/plantProfile?symbol=LYSA2

USDA. NRCS. National Plant Data Center.

https://catalog.hathitrust.org/Record/007415397

HathiTrust Digital Library.

Citation: Thompson, D. Q. (1987). Spread, impact, and control of purple loosestrife (Lythrum salicaria) in North American wetlands. Washington, DC: U.S. Dept. of the Interior, Fish and Wildlife Service.