Canadian Association of Professional Heritage Consultants
Provides directory of Consultants, as well as, publication list & conferences.
Duffus & Company Ltd.- Architects
Specializing in Conservation of Buildings in Nova Scotia.
Preservation Web and Preservation Sourcebook
(USA )- "The definitive guides to historic preservation services and products"
A Digital Archive of American Architecture
Boston College Fine Arts Department - A simple, educational site with a database of mostly New England structures, from 1600 to the present. Search by style, architect, building type, location, and other categories.
The Alliance for Historic Landscape Preservation
The Alliance for Historic Landscape Preservation is an inter-disciplinary professional organization which provides a forum for communication and exchange of information among its members. It is dedicated to the preservation and conservation of historic landscapes in all their variety, from formal gardens and public parks to rural expanses.