D.C. races: a handcycle mecca - RunWashington
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The Leveraged Freedom Chair: A Wheelchair Designed for Developing Countries
Whirlwind's Handcycle Tricycle Development and Testing
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Hand Cranks
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Wheelchair, United Kingdom, 1910-1920 | Science Museum Group Collection
Thought-Provoking Advice
Hand-cranked wheelchair is claimed to be safer and more efficient
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Crank/cycle attachment for wheelchair - YouTube
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Wheelchair, United Kingdom, 1910-1920 | Science Museum Group Collection
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Handcycle - Wikipedia
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Final Design Report: Hand-Drive Rear Wheel Drive Wheelchair Project
EZRide Plus Wheelchair Power Assist : battery motor for manual wheelchairs
Manual Crank | wheelchair-carrier
BBC - A History of the World - Object : Gendron Wheelchair
Accessible Activity-PC Table-Hand Crank Adjust-DS
Participants in the wheelchair/ hand-crank race start off the 29th Annual Marine Corps Marathon (MCM) at Washington, D.C., on Oct. 31, 2004. Since its inception in 1976, over 293,000 civilian and military
