The Berks, Bucks and Oxfordshire Wildlife Trust (BBOWT)

The British Trust for Conservation Volunteers (BTCV)

The Reading & District Natural History Society

The Urban Wildlife Network (UWN)

Henley Town Council

Henley official site

Henley Standard

Henley Visitor Information Centre

The River and Rowing Museum

The Sonning Common Green Gym

Wildflower guide

Green Henley (Anna Heywood's green blog)