Darwin's 'Lowly Earthworm' Gets Its Due

Borderless North, Colgate University Visits Adirondacks To Study Earthworms

An ode to the worm: 'The intestines of the earth', 6,000 species, 600 million years old and undeniably valuable - Country Life

All about earthworms - Welcome Wildlife

Opinion: Tiny movers of earth, and also our hearts

WHY WORMS ARE AMONG YOUR GARDEN'S BEST FRIENDS - Organic Control, Inc.

Casting about: Darwin on worms

Darwin's 'Lowly Earthworm' Gets Its Due

Eileen Kladivko

BBC Radio 4 - Natural Histories, Earthworm

Darwin Only Knew Half the Story on Earthworms

Earthworms Missouri Department of Conservation

Darwin's book on worms 2 : r/Vermiculture