Cressbrook Mill, Litton, Derbyshire, Gilkes turbine, casing
Cressbrook Mill, Litton, Derbyshire, Gilkes turbine, drive
Cressbrook Mill, Litton, Derbyshire, Gilkes turbine gate
Cressbrook Mill, Litton, Derbyshire, Gilkes turbine side view
Cressbrook Mill, Litton, Derbyshire, Gilkes turbine
Cressbrook Mill, Litton, Derbyshire, Gilkes "Vortex" turbine
Pump, Mapledurham Mill, Mapledurham, Berkshire
Correspondence re. Gilkes turbines
Correspondence re. Gilkes turbines