I didn't know if anybody was aware, but the last remaining Doman LZ-5 Rigid Rotor Helicopter was transferred to the New England Air Museum and arrived in Connecticut this past March.
It had been on loan to the Classic Rotors Museum in California, but she is now back in her birth state.
http://www.neam.org/assets/DomanYH-31_000.jpeg
It will be a great addition to a significant rotor craft collection and look really nice next to the Doman/Sikorsky R-6.
Now if we could only locate a Bendix helicopter.....
Jerry