Nova Scotia Hemlock Initiative A research project to understand and control the spread of HWA. The site contains information on hemlock trees, the HWA life cycle and various management efforts.
Canadian Food Inspection Agency Information on HWA from CFIA, the Canadian Food Inspection Agency
Giants of Nova Scotia An interesting web site with a variety of information on trees of Nova Scotia and HWA
CFIA survey protocol Detailed HWA detection Protocol.