The following text from Aviation Week is not unique to the aircraft
pictured:
10/17/1960. Skyhook, new entry in the commercial market, will cost $79,960 in
four-place configuration. Skyhook is certificated for cruising speeds
up to 122 mph (196 kmh). First deliveries are expected to be made in 1961.
01/07/1963. Cessna Aircraft Co. is discontinuing production of its Skyhook
helicopter because a thorough study of the rotary wing aircraft
market by the company indicates that the use of the helicopter for
business and utility purposes has not been developing as anticipated
earlier. Cessna entered the rotary wing field in l952 when it
acquired Seibel Helicopter Co. It has developed about 20 Skyhooks
including four or five military versions which went to South America.