Aberdeen Harbour Board: Photograph of crane hoisting beam during construction works at the River Dee Dock Labelled 16, 31c. Similar to AHB/11/1/26/67 and AHB/11/1/72/8. Similar to MS 3595/AHB3835 in the Special Collections Centre collection, which is described as "Ongoing construction works at the River Dee Dock, steam piling rig on rails, steam derrick crane on rails delivering a reinforced concrete pile to the piling rig, four or so workmen on the piling rig." c. 1910