| rics.org.uk | RICS- Royal Institute of Chartered Surveyors |
| ncees.org | NCEES - National Council of Examiners for Engineering and Surveying |
| mapps.org | MAPPS - Management Association for Private Photogrammetric Surveyors |
| gc.ca | Natural Resources Canada - Legal Surveys Division |
| isaust.org.au | The Institution of Surveyors, Australia |
| fig.net | FIG Tree International Federation of Surveyors |
| alta.org | ALTA- American Land Title Association |
| acsm-nes.org | American Congress on Surveying and Mapping, New England Section |
| acls-aatc.ca | Association of Canada Lands Surveyors |
| acec.org | ACEC - Council of Professional Surveyors |
Australia , Australian Capital Territory , Canberra