Mantsinen 300R tracked crane material handling machine.
Crane moving platform trucks - GIF
Foss 300 derrick steam crane - photos and videos
1934 Aluminum Reduction Works coke pile gantry crane - photo
Offloading four 300-foot cranes from a ship onto a pier - video and photo
1860 hand-operated manual railway crane - photo
Crane for re-railing train tank cars - video and photo