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