vintagegeekculture:Dinosaurs being flown by helicopter into Calgary Zoo, Alberta, 1980. 

vintagegeekculture:Dinosaurs being flown by helicopter into Calgary Zoo, Alberta, 1980. 
vintagegeekculture:Dinosaurs being flown by helicopter into Calgary Zoo, Alberta, 1980. 
vintagegeekculture:Dinosaurs being flown by helicopter into Calgary Zoo, Alberta, 1980. 

vintagegeekculture:Dinosaurs being flown by helicopter into Calgary Zoo, Alberta, 1980.  -- source link

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