Engraving: Watt's first experiment. Marcus Stone ARA pinxt; Herbert Bourne sculpt; published by Appleton & Co 1879
Commemorative spade used to turn the first sod of the River Lee Conservancy's new cutting through Horse Shoe Point 1878
Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea 1886-1887