Observer Hotel 2010
First Hospital Virtual Sydney Rocks Guidebook
Observer Hotel history ObserverHotel.com
Observer Hotel Heritage Council of NSW
Observer Hotel Heritage and Conservation Register
Observer Hotel NSW Office of Environment & Heritage
Observer Hotel www.SydneyArchitecture.com
The Story of Old George Street A Chapter in Old George Street by Charles H. Bertie
George St North Commercial Heritage Precinct
George St North Metcalfe Heritage Precinct
George Street North Heritage Walk www.VisitSydneyAustralia.com
George Street South Heritage Walk www.VisitSydneyAustralia.com
George Street Quarry www.VisitSydneyAustralia.com
George Street Wikipedia.org
NSW Office of Environment & Heritage
Dictionary of Sydney
State Library of NSW