Sussex Sites:

Pete the pond

Sussex Wildlife Trust

Sussex Biodiversity Record Centre

The Sussex Wildlifer

British Dragonfly Groups:

Bedfordshire Odonata

Dorset Dragonfly Group

Warwickshire Dragonfly Group

Northants Dragonfly Group

Yorkshire Branch of the British Dragonfly Society

Shropshire Dragonflies

Dragonfly Centre (Wicken Fen)

Worcestershire Dragonflies

Nature Spot

North Wales Dragonflies

National Sites:

flickr - UK Dragonfly group

National Biodiversity Network (NBN)

British Dragonfly Society

International Sites:

Odonata Central Distribution Viewer

Miscellaneous:

Etymology of Latin Names

NHBS - dragonfly books